20163207640

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{1381}}^1$

素因数の和:1613

約数の個数: 128

約数和(自身を含む): 47391765120

約数和(自身を除く): 27228557480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 71, 97, 106, 142, 194, 212, 265, 284, 355, 388, 424, 485, 530, 568, 710, 776, 970, 1060, 1381, 1420, 1940, 2120, 2762, 2840, 3763, 3880, 5141, 5524, 6887, 6905, 7526, 10282, 11048, 13774, 13810, 15052, 18815, 20564, 25705, 27548, 27620, 30104, 34435, 37630, 41128, 51410, 55096, 55240, 68870, 73193, 75260, 98051, 102820, 133957, 137740, 146386, 150520, 196102, 205640, 267914, 275480, 292772, 365011, 365965, 392204, 490255, 535828, 585544, 669785, 730022, 731930, 784408, 980510, 1071656, 1339570, 1460044, 1463860, 1825055, 1961020, 2679140, 2920088, 2927720, 3650110, 3922040, 5196703, 5358280, 7099721, 7300220, 9510947, 10393406, 14199442, 14600440, 19021894, 20786812, 25983515, 28398884, 35498605, 38043788, 41573624, 47554735, 51967030, 56797768, 70997210, 76087576, 95109470, 103934060, 141994420, 190218940, 207868120, 283988840, 380437880, 504080191, 1008160382, 2016320764, 2520400955, 4032641528, 5040801910, 10081603820, 20163207640]

約数ペア:

[(1, 20163207640), (2, 10081603820), (4, 5040801910), (5, 4032641528), (8, 2520400955), (10, 2016320764), (20, 1008160382), (40, 504080191), (53, 380437880), (71, 283988840), (97, 207868120), (106, 190218940), (142, 141994420), (194, 103934060), (212, 95109470), (265, 76087576), (284, 70997210), (355, 56797768), (388, 51967030), (424, 47554735), (485, 41573624), (530, 38043788), (568, 35498605), (710, 28398884), (776, 25983515), (970, 20786812), (1060, 19021894), (1381, 14600440), (1420, 14199442), (1940, 10393406), (2120, 9510947), (2762, 7300220), (2840, 7099721), (3763, 5358280), (3880, 5196703), (5141, 3922040), (5524, 3650110), (6887, 2927720), (6905, 2920088), (7526, 2679140), (10282, 1961020), (11048, 1825055), (13774, 1463860), (13810, 1460044), (15052, 1339570), (18815, 1071656), (20564, 980510), (25705, 784408), (27548, 731930), (27620, 730022), (30104, 669785), (34435, 585544), (37630, 535828), (41128, 490255), (51410, 392204), (55096, 365965), (55240, 365011), (68870, 292772), (73193, 275480), (75260, 267914), (98051, 205640), (102820, 196102), (133957, 150520), (137740, 146386)]