19018780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 45581760

約数和(自身を除く): 26562980

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 121, 145, 220, 242, 271, 290, 319, 484, 542, 580, 605, 638, 1084, 1210, 1276, 1355, 1595, 2420, 2710, 2981, 3190, 3509, 5420, 5962, 6380, 7018, 7859, 11924, 14036, 14905, 15718, 17545, 29810, 31436, 32791, 35090, 39295, 59620, 65582, 70180, 78590, 86449, 131164, 157180, 163955, 172898, 327910, 345796, 432245, 655820, 864490, 950939, 1728980, 1901878, 3803756, 4754695, 9509390, 19018780]

約数ペア:

[(1, 19018780), (2, 9509390), (4, 4754695), (5, 3803756), (10, 1901878), (11, 1728980), (20, 950939), (22, 864490), (29, 655820), (44, 432245), (55, 345796), (58, 327910), (110, 172898), (116, 163955), (121, 157180), (145, 131164), (220, 86449), (242, 78590), (271, 70180), (290, 65582), (319, 59620), (484, 39295), (542, 35090), (580, 32791), (605, 31436), (638, 29810), (1084, 17545), (1210, 15718), (1276, 14905), (1355, 14036), (1595, 11924), (2420, 7859), (2710, 7018), (2981, 6380), (3190, 5962), (3509, 5420)]