81260325

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:323

約数の個数: 72

約数和(自身を含む): 153630048

約数和(自身を除く): 72369723

約数列:

[1, 3, 5, 9, 15, 25, 37, 43, 45, 75, 111, 129, 185, 215, 225, 227, 333, 387, 555, 645, 681, 925, 1075, 1135, 1591, 1665, 1935, 2043, 2775, 3225, 3405, 4773, 5675, 7955, 8325, 8399, 9675, 9761, 10215, 14319, 17025, 23865, 25197, 29283, 39775, 41995, 48805, 51075, 71595, 75591, 87849, 119325, 125985, 146415, 209975, 244025, 357975, 361157, 377955, 439245, 629925, 732075, 1083471, 1805785, 1889775, 2196225, 3250413, 5417355, 9028925, 16252065, 27086775, 81260325]

約数ペア:

[(1, 81260325), (3, 27086775), (5, 16252065), (9, 9028925), (15, 5417355), (25, 3250413), (37, 2196225), (43, 1889775), (45, 1805785), (75, 1083471), (111, 732075), (129, 629925), (185, 439245), (215, 377955), (225, 361157), (227, 357975), (333, 244025), (387, 209975), (555, 146415), (645, 125985), (681, 119325), (925, 87849), (1075, 75591), (1135, 71595), (1591, 51075), (1665, 48805), (1935, 41995), (2043, 39775), (2775, 29283), (3225, 25197), (3405, 23865), (4773, 17025), (5675, 14319), (7955, 10215), (8325, 9761), (8399, 9675)]