20313590980

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{857}}^1$

素因数の和:1189

約数の個数: 96

約数和(自身を含む): 43952388480

約数和(自身を除く): 23638797500

約数列:

[1, 2, 4, 5, 10, 20, 83, 109, 131, 166, 218, 262, 332, 415, 436, 524, 545, 655, 830, 857, 1090, 1310, 1660, 1714, 2180, 2620, 3428, 4285, 8570, 9047, 10873, 14279, 17140, 18094, 21746, 28558, 36188, 43492, 45235, 54365, 57116, 71131, 71395, 90470, 93413, 108730, 112267, 142262, 142790, 180940, 186826, 217460, 224534, 284524, 285580, 355655, 373652, 449068, 467065, 561335, 711310, 934130, 1122670, 1185157, 1422620, 1868260, 2245340, 2370314, 4740628, 5925785, 7753279, 9318161, 11851570, 12237103, 15506558, 18636322, 23703140, 24474206, 31013116, 37272644, 38766395, 46590805, 48948412, 61185515, 77532790, 93181610, 122371030, 155065580, 186363220, 244742060, 1015679549, 2031359098, 4062718196, 5078397745, 10156795490, 20313590980]

約数ペア:

[(1, 20313590980), (2, 10156795490), (4, 5078397745), (5, 4062718196), (10, 2031359098), (20, 1015679549), (83, 244742060), (109, 186363220), (131, 155065580), (166, 122371030), (218, 93181610), (262, 77532790), (332, 61185515), (415, 48948412), (436, 46590805), (524, 38766395), (545, 37272644), (655, 31013116), (830, 24474206), (857, 23703140), (1090, 18636322), (1310, 15506558), (1660, 12237103), (1714, 11851570), (2180, 9318161), (2620, 7753279), (3428, 5925785), (4285, 4740628), (8570, 2370314), (9047, 2245340), (10873, 1868260), (14279, 1422620), (17140, 1185157), (18094, 1122670), (21746, 934130), (28558, 711310), (36188, 561335), (43492, 467065), (45235, 449068), (54365, 373652), (57116, 355655), (71131, 285580), (71395, 284524), (90470, 224534), (93413, 217460), (108730, 186826), (112267, 180940), (142262, 142790)]