20101540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 44634240

約数和(自身を除く): 24532700

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 89, 92, 115, 178, 230, 356, 445, 460, 491, 890, 982, 1780, 1964, 2047, 2455, 4094, 4910, 8188, 9820, 10235, 11293, 20470, 22586, 40940, 43699, 45172, 56465, 87398, 112930, 174796, 218495, 225860, 436990, 873980, 1005077, 2010154, 4020308, 5025385, 10050770, 20101540]

約数ペア:

[(1, 20101540), (2, 10050770), (4, 5025385), (5, 4020308), (10, 2010154), (20, 1005077), (23, 873980), (46, 436990), (89, 225860), (92, 218495), (115, 174796), (178, 112930), (230, 87398), (356, 56465), (445, 45172), (460, 43699), (491, 40940), (890, 22586), (982, 20470), (1780, 11293), (1964, 10235), (2047, 9820), (2455, 8188), (4094, 4910)]