13205380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 30723840

約数和(自身を除く): 17518460

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 59, 62, 76, 95, 118, 124, 155, 190, 236, 295, 310, 361, 380, 589, 590, 620, 722, 1121, 1178, 1180, 1444, 1805, 1829, 2242, 2356, 2945, 3610, 3658, 4484, 5605, 5890, 7220, 7316, 9145, 11191, 11210, 11780, 18290, 21299, 22382, 22420, 34751, 36580, 42598, 44764, 55955, 69502, 85196, 106495, 111910, 139004, 173755, 212990, 223820, 347510, 425980, 660269, 695020, 1320538, 2641076, 3301345, 6602690, 13205380]

約数ペア:

[(1, 13205380), (2, 6602690), (4, 3301345), (5, 2641076), (10, 1320538), (19, 695020), (20, 660269), (31, 425980), (38, 347510), (59, 223820), (62, 212990), (76, 173755), (95, 139004), (118, 111910), (124, 106495), (155, 85196), (190, 69502), (236, 55955), (295, 44764), (310, 42598), (361, 36580), (380, 34751), (589, 22420), (590, 22382), (620, 21299), (722, 18290), (1121, 11780), (1178, 11210), (1180, 11191), (1444, 9145), (1805, 7316), (1829, 7220), (2242, 5890), (2356, 5605), (2945, 4484), (3610, 3658)]