20349804920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{251}}^1\times {\mathrm{433}}^1$

素因数の和:877

約数の個数: 128

約数和(自身を含む): 47876935680

約数和(自身を除く): 27527130760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 151, 155, 248, 251, 302, 310, 433, 502, 604, 620, 755, 866, 1004, 1208, 1240, 1255, 1510, 1732, 2008, 2165, 2510, 3020, 3464, 4330, 4681, 5020, 6040, 7781, 8660, 9362, 10040, 13423, 15562, 17320, 18724, 23405, 26846, 31124, 37448, 37901, 38905, 46810, 53692, 62248, 65383, 67115, 75802, 77810, 93620, 107384, 108683, 130766, 134230, 151604, 155620, 187240, 189505, 217366, 261532, 268460, 303208, 311240, 326915, 379010, 434732, 523064, 536920, 543415, 653830, 758020, 869464, 1086830, 1174931, 1307660, 1516040, 2026873, 2173660, 2349862, 2615320, 3369173, 4053746, 4347320, 4699724, 5874655, 6738346, 8107492, 9399448, 10134365, 11749310, 13476692, 16214984, 16411133, 16845865, 20268730, 23498620, 26953384, 32822266, 33691730, 40537460, 46997240, 65644532, 67383460, 81074920, 82055665, 131289064, 134766920, 164111330, 328222660, 508745123, 656445320, 1017490246, 2034980492, 2543725615, 4069960984, 5087451230, 10174902460, 20349804920]

約数ペア:

[(1, 20349804920), (2, 10174902460), (4, 5087451230), (5, 4069960984), (8, 2543725615), (10, 2034980492), (20, 1017490246), (31, 656445320), (40, 508745123), (62, 328222660), (124, 164111330), (151, 134766920), (155, 131289064), (248, 82055665), (251, 81074920), (302, 67383460), (310, 65644532), (433, 46997240), (502, 40537460), (604, 33691730), (620, 32822266), (755, 26953384), (866, 23498620), (1004, 20268730), (1208, 16845865), (1240, 16411133), (1255, 16214984), (1510, 13476692), (1732, 11749310), (2008, 10134365), (2165, 9399448), (2510, 8107492), (3020, 6738346), (3464, 5874655), (4330, 4699724), (4681, 4347320), (5020, 4053746), (6040, 3369173), (7781, 2615320), (8660, 2349862), (9362, 2173660), (10040, 2026873), (13423, 1516040), (15562, 1307660), (17320, 1174931), (18724, 1086830), (23405, 869464), (26846, 758020), (31124, 653830), (37448, 543415), (37901, 536920), (38905, 523064), (46810, 434732), (53692, 379010), (62248, 326915), (65383, 311240), (67115, 303208), (75802, 268460), (77810, 261532), (93620, 217366), (107384, 189505), (108683, 187240), (130766, 155620), (134230, 151604)]