18844540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{599}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 46922400

約数和(自身を除く): 28077860

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 599, 605, 715, 1198, 1210, 1430, 1573, 2396, 2420, 2860, 2995, 3146, 5990, 6292, 6589, 7787, 7865, 11980, 13178, 15574, 15730, 26356, 31148, 31460, 32945, 38935, 65890, 72479, 77870, 85657, 131780, 144958, 155740, 171314, 289916, 342628, 362395, 428285, 724790, 856570, 942227, 1449580, 1713140, 1884454, 3768908, 4711135, 9422270, 18844540]

約数ペア:

[(1, 18844540), (2, 9422270), (4, 4711135), (5, 3768908), (10, 1884454), (11, 1713140), (13, 1449580), (20, 942227), (22, 856570), (26, 724790), (44, 428285), (52, 362395), (55, 342628), (65, 289916), (110, 171314), (121, 155740), (130, 144958), (143, 131780), (220, 85657), (242, 77870), (260, 72479), (286, 65890), (484, 38935), (572, 32945), (599, 31460), (605, 31148), (715, 26356), (1198, 15730), (1210, 15574), (1430, 13178), (1573, 11980), (2396, 7865), (2420, 7787), (2860, 6589), (2995, 6292), (3146, 5990)]