71981880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:405

約数の個数: 128

約数和(自身を含む): 229996800

約数和(自身を除く): 158014920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 131, 152, 190, 228, 241, 262, 285, 380, 393, 456, 482, 524, 570, 655, 723, 760, 786, 964, 1048, 1140, 1205, 1310, 1446, 1572, 1928, 1965, 2280, 2410, 2489, 2620, 2892, 3144, 3615, 3930, 4579, 4820, 4978, 5240, 5784, 7230, 7467, 7860, 9158, 9640, 9956, 12445, 13737, 14460, 14934, 15720, 18316, 19912, 22895, 24890, 27474, 28920, 29868, 31571, 36632, 37335, 45790, 49780, 54948, 59736, 63142, 68685, 74670, 91580, 94713, 99560, 109896, 126284, 137370, 149340, 157855, 183160, 189426, 252568, 274740, 298680, 315710, 378852, 473565, 549480, 599849, 631420, 757704, 947130, 1199698, 1262840, 1799547, 1894260, 2399396, 2999245, 3599094, 3788520, 4798792, 5998490, 7198188, 8997735, 11996980, 14396376, 17995470, 23993960, 35990940, 71981880]

約数ペア:

[(1, 71981880), (2, 35990940), (3, 23993960), (4, 17995470), (5, 14396376), (6, 11996980), (8, 8997735), (10, 7198188), (12, 5998490), (15, 4798792), (19, 3788520), (20, 3599094), (24, 2999245), (30, 2399396), (38, 1894260), (40, 1799547), (57, 1262840), (60, 1199698), (76, 947130), (95, 757704), (114, 631420), (120, 599849), (131, 549480), (152, 473565), (190, 378852), (228, 315710), (241, 298680), (262, 274740), (285, 252568), (380, 189426), (393, 183160), (456, 157855), (482, 149340), (524, 137370), (570, 126284), (655, 109896), (723, 99560), (760, 94713), (786, 91580), (964, 74670), (1048, 68685), (1140, 63142), (1205, 59736), (1310, 54948), (1446, 49780), (1572, 45790), (1928, 37335), (1965, 36632), (2280, 31571), (2410, 29868), (2489, 28920), (2620, 27474), (2892, 24890), (3144, 22895), (3615, 19912), (3930, 18316), (4579, 15720), (4820, 14934), (4978, 14460), (5240, 13737), (5784, 12445), (7230, 9956), (7467, 9640), (7860, 9158)]