21137460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:122

約数の個数: 144

約数和(自身を含む): 66842496

約数和(自身を除く): 45705036

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 23, 30, 34, 46, 51, 53, 60, 68, 69, 85, 92, 102, 106, 115, 138, 159, 170, 204, 212, 230, 255, 265, 276, 289, 318, 340, 345, 391, 460, 510, 530, 578, 636, 690, 782, 795, 867, 901, 1020, 1060, 1156, 1173, 1219, 1380, 1445, 1564, 1590, 1734, 1802, 1955, 2346, 2438, 2703, 2890, 3180, 3468, 3604, 3657, 3910, 4335, 4505, 4692, 4876, 5406, 5780, 5865, 6095, 6647, 7314, 7820, 8670, 9010, 10812, 11730, 12190, 13294, 13515, 14628, 15317, 17340, 18020, 18285, 19941, 20723, 23460, 24380, 26588, 27030, 30634, 33235, 36570, 39882, 41446, 45951, 54060, 61268, 62169, 66470, 73140, 76585, 79764, 82892, 91902, 99705, 103615, 124338, 132940, 153170, 183804, 199410, 207230, 229755, 248676, 306340, 310845, 352291, 398820, 414460, 459510, 621690, 704582, 919020, 1056873, 1243380, 1409164, 1761455, 2113746, 3522910, 4227492, 5284365, 7045820, 10568730, 21137460]

約数ペア:

[(1, 21137460), (2, 10568730), (3, 7045820), (4, 5284365), (5, 4227492), (6, 3522910), (10, 2113746), (12, 1761455), (15, 1409164), (17, 1243380), (20, 1056873), (23, 919020), (30, 704582), (34, 621690), (46, 459510), (51, 414460), (53, 398820), (60, 352291), (68, 310845), (69, 306340), (85, 248676), (92, 229755), (102, 207230), (106, 199410), (115, 183804), (138, 153170), (159, 132940), (170, 124338), (204, 103615), (212, 99705), (230, 91902), (255, 82892), (265, 79764), (276, 76585), (289, 73140), (318, 66470), (340, 62169), (345, 61268), (391, 54060), (460, 45951), (510, 41446), (530, 39882), (578, 36570), (636, 33235), (690, 30634), (782, 27030), (795, 26588), (867, 24380), (901, 23460), (1020, 20723), (1060, 19941), (1156, 18285), (1173, 18020), (1219, 17340), (1380, 15317), (1445, 14628), (1564, 13515), (1590, 13294), (1734, 12190), (1802, 11730), (1955, 10812), (2346, 9010), (2438, 8670), (2703, 7820), (2890, 7314), (3180, 6647), (3468, 6095), (3604, 5865), (3657, 5780), (3910, 5406), (4335, 4876), (4505, 4692)]