20545980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 192

約数和(自身を含む): 73156608

約数和(自身を除く): 52610628

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, 71, 78, 84, 91, 105, 106, 130, 140, 142, 156, 159, 182, 195, 210, 212, 213, 260, 265, 273, 284, 318, 355, 364, 371, 390, 420, 426, 455, 497, 530, 546, 636, 689, 710, 742, 780, 795, 852, 910, 923, 994, 1060, 1065, 1092, 1113, 1365, 1378, 1420, 1484, 1491, 1590, 1820, 1846, 1855, 1988, 2067, 2130, 2226, 2485, 2730, 2756, 2769, 2982, 3180, 3445, 3692, 3710, 3763, 4134, 4260, 4452, 4615, 4823, 4970, 5460, 5538, 5565, 5964, 6461, 6890, 7420, 7455, 7526, 8268, 9230, 9646, 9940, 10335, 11076, 11130, 11289, 12922, 13780, 13845, 14469, 14910, 15052, 18460, 18815, 19292, 19383, 20670, 22260, 22578, 24115, 25844, 26341, 27690, 28938, 29820, 32305, 37630, 38766, 41340, 45156, 48230, 48919, 52682, 55380, 56445, 57876, 64610, 72345, 75260, 77532, 79023, 96460, 96915, 97838, 105364, 112890, 129220, 131705, 144690, 146757, 158046, 193830, 195676, 225780, 244595, 263410, 289380, 293514, 316092, 342433, 387660, 395115, 489190, 526820, 587028, 684866, 733785, 790230, 978380, 1027299, 1369732, 1467570, 1580460, 1712165, 2054598, 2935140, 3424330, 4109196, 5136495, 6848660, 10272990, 20545980]

約数ペア:

[(1, 20545980), (2, 10272990), (3, 6848660), (4, 5136495), (5, 4109196), (6, 3424330), (7, 2935140), (10, 2054598), (12, 1712165), (13, 1580460), (14, 1467570), (15, 1369732), (20, 1027299), (21, 978380), (26, 790230), (28, 733785), (30, 684866), (35, 587028), (39, 526820), (42, 489190), (52, 395115), (53, 387660), (60, 342433), (65, 316092), (70, 293514), (71, 289380), (78, 263410), (84, 244595), (91, 225780), (105, 195676), (106, 193830), (130, 158046), (140, 146757), (142, 144690), (156, 131705), (159, 129220), (182, 112890), (195, 105364), (210, 97838), (212, 96915), (213, 96460), (260, 79023), (265, 77532), (273, 75260), (284, 72345), (318, 64610), (355, 57876), (364, 56445), (371, 55380), (390, 52682), (420, 48919), (426, 48230), (455, 45156), (497, 41340), (530, 38766), (546, 37630), (636, 32305), (689, 29820), (710, 28938), (742, 27690), (780, 26341), (795, 25844), (852, 24115), (910, 22578), (923, 22260), (994, 20670), (1060, 19383), (1065, 19292), (1092, 18815), (1113, 18460), (1365, 15052), (1378, 14910), (1420, 14469), (1484, 13845), (1491, 13780), (1590, 12922), (1820, 11289), (1846, 11130), (1855, 11076), (1988, 10335), (2067, 9940), (2130, 9646), (2226, 9230), (2485, 8268), (2730, 7526), (2756, 7455), (2769, 7420), (2982, 6890), (3180, 6461), (3445, 5964), (3692, 5565), (3710, 5538), (3763, 5460), (4134, 4970), (4260, 4823), (4452, 4615)]