20823980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{839}}^1$

素因数の和:938

約数の個数: 48

約数和(自身を含む): 46992960

約数和(自身を除く): 26168980

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 73, 85, 146, 170, 292, 340, 365, 730, 839, 1241, 1460, 1678, 2482, 3356, 4195, 4964, 6205, 8390, 12410, 14263, 16780, 24820, 28526, 57052, 61247, 71315, 122494, 142630, 244988, 285260, 306235, 612470, 1041199, 1224940, 2082398, 4164796, 5205995, 10411990, 20823980]

約数ペア:

[(1, 20823980), (2, 10411990), (4, 5205995), (5, 4164796), (10, 2082398), (17, 1224940), (20, 1041199), (34, 612470), (68, 306235), (73, 285260), (85, 244988), (146, 142630), (170, 122494), (292, 71315), (340, 61247), (365, 57052), (730, 28526), (839, 24820), (1241, 16780), (1460, 14263), (1678, 12410), (2482, 8390), (3356, 6205), (4195, 4964)]