665228380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{379}}^1$

素因数の和:587

約数の個数: 96

約数和(自身を含む): 1532160000

約数和(自身を除く): 866931620

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 149, 155, 190, 298, 310, 379, 380, 589, 596, 620, 745, 758, 1178, 1490, 1516, 1895, 2356, 2831, 2945, 2980, 3790, 4619, 5662, 5890, 7201, 7580, 9238, 11324, 11749, 11780, 14155, 14402, 18476, 23095, 23498, 28310, 28804, 36005, 46190, 46996, 56471, 56620, 58745, 72010, 87761, 92380, 112942, 117490, 144020, 175522, 223231, 225884, 234980, 282355, 351044, 438805, 446462, 564710, 877610, 892924, 1072949, 1116155, 1129420, 1750601, 1755220, 2145898, 2232310, 3501202, 4291796, 4464620, 5364745, 7002404, 8753005, 10729490, 17506010, 21458980, 33261419, 35012020, 66522838, 133045676, 166307095, 332614190, 665228380]

約数ペア:

[(1, 665228380), (2, 332614190), (4, 166307095), (5, 133045676), (10, 66522838), (19, 35012020), (20, 33261419), (31, 21458980), (38, 17506010), (62, 10729490), (76, 8753005), (95, 7002404), (124, 5364745), (149, 4464620), (155, 4291796), (190, 3501202), (298, 2232310), (310, 2145898), (379, 1755220), (380, 1750601), (589, 1129420), (596, 1116155), (620, 1072949), (745, 892924), (758, 877610), (1178, 564710), (1490, 446462), (1516, 438805), (1895, 351044), (2356, 282355), (2831, 234980), (2945, 225884), (2980, 223231), (3790, 175522), (4619, 144020), (5662, 117490), (5890, 112942), (7201, 92380), (7580, 87761), (9238, 72010), (11324, 58745), (11749, 56620), (11780, 56471), (14155, 46996), (14402, 46190), (18476, 36005), (23095, 28804), (23498, 28310)]