78421980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{271}}^1$

素因数の和:356

約数の個数: 192

約数和(自身を含む): 276369408

約数和(自身を除く): 197947428

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, 271, 273, 318, 364, 371, 390, 420, 455, 530, 542, 546, 636, 689, 742, 780, 795, 813, 910, 1060, 1084, 1092, 1113, 1355, 1365, 1378, 1484, 1590, 1626, 1820, 1855, 1897, 2067, 2226, 2710, 2730, 2756, 3180, 3252, 3445, 3523, 3710, 3794, 4065, 4134, 4452, 4823, 5420, 5460, 5565, 5691, 6890, 7046, 7420, 7588, 8130, 8268, 9485, 9646, 10335, 10569, 11130, 11382, 13780, 14092, 14363, 14469, 16260, 17615, 18970, 19292, 20670, 21138, 22260, 22764, 24115, 24661, 28455, 28726, 28938, 35230, 37940, 41340, 42276, 43089, 48230, 49322, 52845, 56910, 57452, 57876, 70460, 71815, 72345, 73983, 86178, 96460, 98644, 100541, 105690, 113820, 123305, 143630, 144690, 147966, 172356, 186719, 201082, 211380, 215445, 246610, 287260, 289380, 295932, 301623, 369915, 373438, 402164, 430890, 493220, 502705, 560157, 603246, 739830, 746876, 861780, 933595, 1005410, 1120314, 1206492, 1307033, 1479660, 1508115, 1867190, 2010820, 2240628, 2614066, 2800785, 3016230, 3734380, 3921099, 5228132, 5601570, 6032460, 6535165, 7842198, 11203140, 13070330, 15684396, 19605495, 26140660, 39210990, 78421980]

約数ペア:

[(1, 78421980), (2, 39210990), (3, 26140660), (4, 19605495), (5, 15684396), (6, 13070330), (7, 11203140), (10, 7842198), (12, 6535165), (13, 6032460), (14, 5601570), (15, 5228132), (20, 3921099), (21, 3734380), (26, 3016230), (28, 2800785), (30, 2614066), (35, 2240628), (39, 2010820), (42, 1867190), (52, 1508115), (53, 1479660), (60, 1307033), (65, 1206492), (70, 1120314), (78, 1005410), (84, 933595), (91, 861780), (105, 746876), (106, 739830), (130, 603246), (140, 560157), (156, 502705), (159, 493220), (182, 430890), (195, 402164), (210, 373438), (212, 369915), (260, 301623), (265, 295932), (271, 289380), (273, 287260), (318, 246610), (364, 215445), (371, 211380), (390, 201082), (420, 186719), (455, 172356), (530, 147966), (542, 144690), (546, 143630), (636, 123305), (689, 113820), (742, 105690), (780, 100541), (795, 98644), (813, 96460), (910, 86178), (1060, 73983), (1084, 72345), (1092, 71815), (1113, 70460), (1355, 57876), (1365, 57452), (1378, 56910), (1484, 52845), (1590, 49322), (1626, 48230), (1820, 43089), (1855, 42276), (1897, 41340), (2067, 37940), (2226, 35230), (2710, 28938), (2730, 28726), (2756, 28455), (3180, 24661), (3252, 24115), (3445, 22764), (3523, 22260), (3710, 21138), (3794, 20670), (4065, 19292), (4134, 18970), (4452, 17615), (4823, 16260), (5420, 14469), (5460, 14363), (5565, 14092), (5691, 13780), (6890, 11382), (7046, 11130), (7420, 10569), (7588, 10335), (8130, 9646), (8268, 9485)]