18956980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:173

約数の個数: 96

約数和(自身を含む): 48254976

約数和(自身を除く): 29297996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 47, 67, 70, 86, 94, 134, 140, 172, 188, 215, 235, 268, 301, 329, 335, 430, 469, 470, 602, 658, 670, 860, 938, 940, 1204, 1316, 1340, 1505, 1645, 1876, 2021, 2345, 2881, 3010, 3149, 3290, 4042, 4690, 5762, 6020, 6298, 6580, 8084, 9380, 10105, 11524, 12596, 14147, 14405, 15745, 20167, 20210, 22043, 28294, 28810, 31490, 40334, 40420, 44086, 56588, 57620, 62980, 70735, 80668, 88172, 100835, 110215, 135407, 141470, 201670, 220430, 270814, 282940, 403340, 440860, 541628, 677035, 947849, 1354070, 1895698, 2708140, 3791396, 4739245, 9478490, 18956980]

約数ペア:

[(1, 18956980), (2, 9478490), (4, 4739245), (5, 3791396), (7, 2708140), (10, 1895698), (14, 1354070), (20, 947849), (28, 677035), (35, 541628), (43, 440860), (47, 403340), (67, 282940), (70, 270814), (86, 220430), (94, 201670), (134, 141470), (140, 135407), (172, 110215), (188, 100835), (215, 88172), (235, 80668), (268, 70735), (301, 62980), (329, 57620), (335, 56588), (430, 44086), (469, 40420), (470, 40334), (602, 31490), (658, 28810), (670, 28294), (860, 22043), (938, 20210), (940, 20167), (1204, 15745), (1316, 14405), (1340, 14147), (1505, 12596), (1645, 11524), (1876, 10105), (2021, 9380), (2345, 8084), (2881, 6580), (3010, 6298), (3149, 6020), (3290, 5762), (4042, 4690)]