20281355440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{83}}^1\times {\mathrm{8461}}^1$

素因数の和:8595

約数の個数: 120

約数和(自身を含む): 50372119728

約数和(自身を除く): 30090764288

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 83, 95, 152, 166, 190, 304, 332, 361, 380, 415, 664, 722, 760, 830, 1328, 1444, 1520, 1577, 1660, 1805, 2888, 3154, 3320, 3610, 5776, 6308, 6640, 7220, 7885, 8461, 12616, 14440, 15770, 16922, 25232, 28880, 29963, 31540, 33844, 42305, 59926, 63080, 67688, 84610, 119852, 126160, 135376, 149815, 160759, 169220, 239704, 299630, 321518, 338440, 479408, 599260, 643036, 676880, 702263, 803795, 1198520, 1286072, 1404526, 1607590, 2397040, 2572144, 2809052, 3054421, 3215180, 3511315, 5618104, 6108842, 6430360, 7022630, 11236208, 12217684, 12860720, 13342997, 14045260, 15272105, 24435368, 26685994, 28090520, 30544210, 48870736, 53371988, 56181040, 61088420, 66714985, 106743976, 122176840, 133429970, 213487952, 244353680, 253516943, 266859940, 507033886, 533719880, 1014067772, 1067439760, 1267584715, 2028135544, 2535169430, 4056271088, 5070338860, 10140677720, 20281355440]

約数ペア:

[(1, 20281355440), (2, 10140677720), (4, 5070338860), (5, 4056271088), (8, 2535169430), (10, 2028135544), (16, 1267584715), (19, 1067439760), (20, 1014067772), (38, 533719880), (40, 507033886), (76, 266859940), (80, 253516943), (83, 244353680), (95, 213487952), (152, 133429970), (166, 122176840), (190, 106743976), (304, 66714985), (332, 61088420), (361, 56181040), (380, 53371988), (415, 48870736), (664, 30544210), (722, 28090520), (760, 26685994), (830, 24435368), (1328, 15272105), (1444, 14045260), (1520, 13342997), (1577, 12860720), (1660, 12217684), (1805, 11236208), (2888, 7022630), (3154, 6430360), (3320, 6108842), (3610, 5618104), (5776, 3511315), (6308, 3215180), (6640, 3054421), (7220, 2809052), (7885, 2572144), (8461, 2397040), (12616, 1607590), (14440, 1404526), (15770, 1286072), (16922, 1198520), (25232, 803795), (28880, 702263), (29963, 676880), (31540, 643036), (33844, 599260), (42305, 479408), (59926, 338440), (63080, 321518), (67688, 299630), (84610, 239704), (119852, 169220), (126160, 160759), (135376, 149815)]