19801080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4231}}^1$

素因数の和:4261

約数の個数: 96

約数和(自身を含む): 69320160

約数和(自身を除く): 49519080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4231, 4680, 8462, 12693, 16924, 21155, 25386, 33848, 38079, 42310, 50772, 55003, 63465, 76158, 84620, 101544, 110006, 126930, 152316, 165009, 169240, 190395, 220012, 253860, 275015, 304632, 330018, 380790, 440024, 495027, 507720, 550030, 660036, 761580, 825045, 990054, 1100060, 1320072, 1523160, 1650090, 1980108, 2200120, 2475135, 3300180, 3960216, 4950270, 6600360, 9900540, 19801080]

約数ペア:

[(1, 19801080), (2, 9900540), (3, 6600360), (4, 4950270), (5, 3960216), (6, 3300180), (8, 2475135), (9, 2200120), (10, 1980108), (12, 1650090), (13, 1523160), (15, 1320072), (18, 1100060), (20, 990054), (24, 825045), (26, 761580), (30, 660036), (36, 550030), (39, 507720), (40, 495027), (45, 440024), (52, 380790), (60, 330018), (65, 304632), (72, 275015), (78, 253860), (90, 220012), (104, 190395), (117, 169240), (120, 165009), (130, 152316), (156, 126930), (180, 110006), (195, 101544), (234, 84620), (260, 76158), (312, 63465), (360, 55003), (390, 50772), (468, 42310), (520, 38079), (585, 33848), (780, 25386), (936, 21155), (1170, 16924), (1560, 12693), (2340, 8462), (4231, 4680)]