399300880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{587}}^1\times {\mathrm{773}}^1$

素因数の和:1384

約数の個数: 80

約数和(自身を含む): 1015809984

約数和(自身を除く): 616509104

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 587, 773, 880, 1174, 1546, 2348, 2935, 3092, 3865, 4696, 5870, 6184, 6457, 7730, 8503, 9392, 11740, 12368, 12914, 15460, 17006, 23480, 25828, 30920, 32285, 34012, 42515, 46960, 51656, 61840, 64570, 68024, 85030, 103312, 129140, 136048, 170060, 258280, 340120, 453751, 516560, 680240, 907502, 1815004, 2268755, 3630008, 4537510, 4991261, 7260016, 9075020, 9982522, 18150040, 19965044, 24956305, 36300080, 39930088, 49912610, 79860176, 99825220, 199650440, 399300880]

約数ペア:

[(1, 399300880), (2, 199650440), (4, 99825220), (5, 79860176), (8, 49912610), (10, 39930088), (11, 36300080), (16, 24956305), (20, 19965044), (22, 18150040), (40, 9982522), (44, 9075020), (55, 7260016), (80, 4991261), (88, 4537510), (110, 3630008), (176, 2268755), (220, 1815004), (440, 907502), (587, 680240), (773, 516560), (880, 453751), (1174, 340120), (1546, 258280), (2348, 170060), (2935, 136048), (3092, 129140), (3865, 103312), (4696, 85030), (5870, 68024), (6184, 64570), (6457, 61840), (7730, 51656), (8503, 46960), (9392, 42515), (11740, 34012), (12368, 32285), (12914, 30920), (15460, 25828), (17006, 23480)]