21386590

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{3631}}^1$

素因数の和:3688

約数の個数: 32

約数和(自身を含む): 41840640

約数和(自身を除く): 20454050

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 155, 190, 310, 589, 1178, 2945, 3631, 5890, 7262, 18155, 36310, 68989, 112561, 137978, 225122, 344945, 562805, 689890, 1125610, 2138659, 4277318, 10693295, 21386590]

約数ペア:

[(1, 21386590), (2, 10693295), (5, 4277318), (10, 2138659), (19, 1125610), (31, 689890), (38, 562805), (62, 344945), (95, 225122), (155, 137978), (190, 112561), (310, 68989), (589, 36310), (1178, 18155), (2945, 7262), (3631, 5890)]