81342440

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:486

約数の個数: 64

約数和(自身を含む): 188211600

約数和(自身を除く): 106869160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 89, 146, 178, 292, 313, 356, 365, 445, 584, 626, 712, 730, 890, 1252, 1460, 1565, 1780, 2504, 2920, 3130, 3560, 6260, 6497, 12520, 12994, 22849, 25988, 27857, 32485, 45698, 51976, 55714, 64970, 91396, 111428, 114245, 129940, 139285, 182792, 222856, 228490, 259880, 278570, 456980, 557140, 913960, 1114280, 2033561, 4067122, 8134244, 10167805, 16268488, 20335610, 40671220, 81342440]

約数ペア:

[(1, 81342440), (2, 40671220), (4, 20335610), (5, 16268488), (8, 10167805), (10, 8134244), (20, 4067122), (40, 2033561), (73, 1114280), (89, 913960), (146, 557140), (178, 456980), (292, 278570), (313, 259880), (356, 228490), (365, 222856), (445, 182792), (584, 139285), (626, 129940), (712, 114245), (730, 111428), (890, 91396), (1252, 64970), (1460, 55714), (1565, 51976), (1780, 45698), (2504, 32485), (2920, 27857), (3130, 25988), (3560, 22849), (6260, 12994), (6497, 12520)]