20462820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{587}}^1$

素因数の和:689

約数の個数: 96

約数和(自身を含む): 66382848

約数和(自身を除く): 45920028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 83, 84, 105, 140, 166, 210, 249, 332, 415, 420, 498, 581, 587, 830, 996, 1162, 1174, 1245, 1660, 1743, 1761, 2324, 2348, 2490, 2905, 2935, 3486, 3522, 4109, 4980, 5810, 5870, 6972, 7044, 8218, 8715, 8805, 11620, 11740, 12327, 16436, 17430, 17610, 20545, 24654, 34860, 35220, 41090, 48721, 49308, 61635, 82180, 97442, 123270, 146163, 194884, 243605, 246540, 292326, 341047, 487210, 584652, 682094, 730815, 974420, 1023141, 1364188, 1461630, 1705235, 2046282, 2923260, 3410470, 4092564, 5115705, 6820940, 10231410, 20462820]

約数ペア:

[(1, 20462820), (2, 10231410), (3, 6820940), (4, 5115705), (5, 4092564), (6, 3410470), (7, 2923260), (10, 2046282), (12, 1705235), (14, 1461630), (15, 1364188), (20, 1023141), (21, 974420), (28, 730815), (30, 682094), (35, 584652), (42, 487210), (60, 341047), (70, 292326), (83, 246540), (84, 243605), (105, 194884), (140, 146163), (166, 123270), (210, 97442), (249, 82180), (332, 61635), (415, 49308), (420, 48721), (498, 41090), (581, 35220), (587, 34860), (830, 24654), (996, 20545), (1162, 17610), (1174, 17430), (1245, 16436), (1660, 12327), (1743, 11740), (1761, 11620), (2324, 8805), (2348, 8715), (2490, 8218), (2905, 7044), (2935, 6972), (3486, 5870), (3522, 5810), (4109, 4980)]