17681780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 40965120

約数和(自身を除く): 23283340

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 79, 95, 124, 155, 158, 190, 310, 316, 361, 380, 395, 589, 620, 722, 790, 1178, 1444, 1501, 1580, 1805, 2356, 2449, 2945, 3002, 3610, 4898, 5890, 6004, 7220, 7505, 9796, 11191, 11780, 12245, 15010, 22382, 24490, 28519, 30020, 44764, 46531, 48980, 55955, 57038, 93062, 111910, 114076, 142595, 186124, 223820, 232655, 285190, 465310, 570380, 884089, 930620, 1768178, 3536356, 4420445, 8840890, 17681780]

約数ペア:

[(1, 17681780), (2, 8840890), (4, 4420445), (5, 3536356), (10, 1768178), (19, 930620), (20, 884089), (31, 570380), (38, 465310), (62, 285190), (76, 232655), (79, 223820), (95, 186124), (124, 142595), (155, 114076), (158, 111910), (190, 93062), (310, 57038), (316, 55955), (361, 48980), (380, 46531), (395, 44764), (589, 30020), (620, 28519), (722, 24490), (790, 22382), (1178, 15010), (1444, 12245), (1501, 11780), (1580, 11191), (1805, 9796), (2356, 7505), (2449, 7220), (2945, 6004), (3002, 5890), (3610, 4898)]