18771740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:207

約数の個数: 96

約数和(自身を含む): 46738944

約数和(自身を除く): 27967204

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 31, 34, 52, 62, 65, 68, 85, 124, 130, 137, 155, 170, 221, 260, 274, 310, 340, 403, 442, 527, 548, 620, 685, 806, 884, 1054, 1105, 1370, 1612, 1781, 2015, 2108, 2210, 2329, 2635, 2740, 3562, 4030, 4247, 4420, 4658, 5270, 6851, 7124, 8060, 8494, 8905, 9316, 10540, 11645, 13702, 16988, 17810, 21235, 23290, 27404, 30277, 34255, 35620, 42470, 46580, 55211, 60554, 68510, 72199, 84940, 110422, 121108, 137020, 144398, 151385, 220844, 276055, 288796, 302770, 360995, 552110, 605540, 721990, 938587, 1104220, 1443980, 1877174, 3754348, 4692935, 9385870, 18771740]

約数ペア:

[(1, 18771740), (2, 9385870), (4, 4692935), (5, 3754348), (10, 1877174), (13, 1443980), (17, 1104220), (20, 938587), (26, 721990), (31, 605540), (34, 552110), (52, 360995), (62, 302770), (65, 288796), (68, 276055), (85, 220844), (124, 151385), (130, 144398), (137, 137020), (155, 121108), (170, 110422), (221, 84940), (260, 72199), (274, 68510), (310, 60554), (340, 55211), (403, 46580), (442, 42470), (527, 35620), (548, 34255), (620, 30277), (685, 27404), (806, 23290), (884, 21235), (1054, 17810), (1105, 16988), (1370, 13702), (1612, 11645), (1781, 10540), (2015, 9316), (2108, 8905), (2210, 8494), (2329, 8060), (2635, 7124), (2740, 6851), (3562, 5270), (4030, 4658), (4247, 4420)]