15553780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^2$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 38132640

約数和(自身を除く): 22578860

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 61, 76, 95, 110, 122, 190, 209, 220, 244, 305, 380, 418, 610, 671, 836, 1045, 1159, 1220, 1342, 2090, 2318, 2684, 3355, 3721, 4180, 4636, 5795, 6710, 7442, 11590, 12749, 13420, 14884, 18605, 23180, 25498, 37210, 40931, 50996, 63745, 70699, 74420, 81862, 127490, 141398, 163724, 204655, 254980, 282796, 353495, 409310, 706990, 777689, 818620, 1413980, 1555378, 3110756, 3888445, 7776890, 15553780]

約数ペア:

[(1, 15553780), (2, 7776890), (4, 3888445), (5, 3110756), (10, 1555378), (11, 1413980), (19, 818620), (20, 777689), (22, 706990), (38, 409310), (44, 353495), (55, 282796), (61, 254980), (76, 204655), (95, 163724), (110, 141398), (122, 127490), (190, 81862), (209, 74420), (220, 70699), (244, 63745), (305, 50996), (380, 40931), (418, 37210), (610, 25498), (671, 23180), (836, 18605), (1045, 14884), (1159, 13420), (1220, 12749), (1342, 11590), (2090, 7442), (2318, 6710), (2684, 5795), (3355, 4636), (3721, 4180)]