81315780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{281}}^1$

素因数の和:366

約数の個数: 192

約数和(自身を含む): 286530048

約数和(自身を除く): 205214268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 53, 60, 65, 70, 78, 84, 91, 105, 106, 130, 140, 156, 159, 182, 195, 210, 212, 260, 265, 273, 281, 318, 364, 371, 390, 420, 455, 530, 546, 562, 636, 689, 742, 780, 795, 843, 910, 1060, 1092, 1113, 1124, 1365, 1378, 1405, 1484, 1590, 1686, 1820, 1855, 1967, 2067, 2226, 2730, 2756, 2810, 3180, 3372, 3445, 3653, 3710, 3934, 4134, 4215, 4452, 4823, 5460, 5565, 5620, 5901, 6890, 7306, 7420, 7868, 8268, 8430, 9646, 9835, 10335, 10959, 11130, 11802, 13780, 14469, 14612, 14893, 16860, 18265, 19292, 19670, 20670, 21918, 22260, 23604, 24115, 25571, 28938, 29505, 29786, 36530, 39340, 41340, 43836, 44679, 48230, 51142, 54795, 57876, 59010, 59572, 72345, 73060, 74465, 76713, 89358, 96460, 102284, 104251, 109590, 118020, 127855, 144690, 148930, 153426, 178716, 193609, 208502, 219180, 223395, 255710, 289380, 297860, 306852, 312753, 383565, 387218, 417004, 446790, 511420, 521255, 580827, 625506, 767130, 774436, 893580, 968045, 1042510, 1161654, 1251012, 1355263, 1534260, 1563765, 1936090, 2085020, 2323308, 2710526, 2904135, 3127530, 3872180, 4065789, 5421052, 5808270, 6255060, 6776315, 8131578, 11616540, 13552630, 16263156, 20328945, 27105260, 40657890, 81315780]

約数ペア:

[(1, 81315780), (2, 40657890), (3, 27105260), (4, 20328945), (5, 16263156), (6, 13552630), (7, 11616540), (10, 8131578), (12, 6776315), (13, 6255060), (14, 5808270), (15, 5421052), (20, 4065789), (21, 3872180), (26, 3127530), (28, 2904135), (30, 2710526), (35, 2323308), (39, 2085020), (42, 1936090), (52, 1563765), (53, 1534260), (60, 1355263), (65, 1251012), (70, 1161654), (78, 1042510), (84, 968045), (91, 893580), (105, 774436), (106, 767130), (130, 625506), (140, 580827), (156, 521255), (159, 511420), (182, 446790), (195, 417004), (210, 387218), (212, 383565), (260, 312753), (265, 306852), (273, 297860), (281, 289380), (318, 255710), (364, 223395), (371, 219180), (390, 208502), (420, 193609), (455, 178716), (530, 153426), (546, 148930), (562, 144690), (636, 127855), (689, 118020), (742, 109590), (780, 104251), (795, 102284), (843, 96460), (910, 89358), (1060, 76713), (1092, 74465), (1113, 73060), (1124, 72345), (1365, 59572), (1378, 59010), (1405, 57876), (1484, 54795), (1590, 51142), (1686, 48230), (1820, 44679), (1855, 43836), (1967, 41340), (2067, 39340), (2226, 36530), (2730, 29786), (2756, 29505), (2810, 28938), (3180, 25571), (3372, 24115), (3445, 23604), (3653, 22260), (3710, 21918), (3934, 20670), (4134, 19670), (4215, 19292), (4452, 18265), (4823, 16860), (5460, 14893), (5565, 14612), (5620, 14469), (5901, 13780), (6890, 11802), (7306, 11130), (7420, 10959), (7868, 10335), (8268, 9835), (8430, 9646)]