72487180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{811}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 157560480

約数和(自身を除く): 85073300

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 109, 164, 205, 218, 410, 436, 545, 811, 820, 1090, 1622, 2180, 3244, 4055, 4469, 8110, 8938, 16220, 17876, 22345, 33251, 44690, 66502, 88399, 89380, 133004, 166255, 176798, 332510, 353596, 441995, 665020, 883990, 1767980, 3624359, 7248718, 14497436, 18121795, 36243590, 72487180]

約数ペア:

[(1, 72487180), (2, 36243590), (4, 18121795), (5, 14497436), (10, 7248718), (20, 3624359), (41, 1767980), (82, 883990), (109, 665020), (164, 441995), (205, 353596), (218, 332510), (410, 176798), (436, 166255), (545, 133004), (811, 89380), (820, 88399), (1090, 66502), (1622, 44690), (2180, 33251), (3244, 22345), (4055, 17876), (4469, 16220), (8110, 8938)]