64061680

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19531}}^1$

素因数の和:19585

約数の個数: 40

約数和(自身を含む): 152583984

約数和(自身を除く): 88522304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 19531, 39062, 78124, 97655, 156248, 195310, 312496, 390620, 781240, 800771, 1562480, 1601542, 3203084, 4003855, 6406168, 8007710, 12812336, 16015420, 32030840, 64061680]

約数ペア:

[(1, 64061680), (2, 32030840), (4, 16015420), (5, 12812336), (8, 8007710), (10, 6406168), (16, 4003855), (20, 3203084), (40, 1601542), (41, 1562480), (80, 800771), (82, 781240), (164, 390620), (205, 312496), (328, 195310), (410, 156248), (656, 97655), (820, 78124), (1640, 39062), (3280, 19531)]