18028340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{227}}^1$

素因数の和:285

約数の個数: 72

約数和(自身を含む): 43781472

約数和(自身を除く): 25753132

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 227, 361, 380, 418, 454, 722, 836, 908, 1045, 1135, 1444, 1805, 2090, 2270, 2497, 3610, 3971, 4180, 4313, 4540, 4994, 7220, 7942, 8626, 9988, 12485, 15884, 17252, 19855, 21565, 24970, 39710, 43130, 47443, 49940, 79420, 81947, 86260, 94886, 163894, 189772, 237215, 327788, 409735, 474430, 819470, 901417, 948860, 1638940, 1802834, 3605668, 4507085, 9014170, 18028340]

約数ペア:

[(1, 18028340), (2, 9014170), (4, 4507085), (5, 3605668), (10, 1802834), (11, 1638940), (19, 948860), (20, 901417), (22, 819470), (38, 474430), (44, 409735), (55, 327788), (76, 237215), (95, 189772), (110, 163894), (190, 94886), (209, 86260), (220, 81947), (227, 79420), (361, 49940), (380, 47443), (418, 43130), (454, 39710), (722, 24970), (836, 21565), (908, 19855), (1045, 17252), (1135, 15884), (1444, 12485), (1805, 9988), (2090, 8626), (2270, 7942), (2497, 7220), (3610, 4994), (3971, 4540), (4180, 4313)]