20001984920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{12101}}^1$

素因数の和:12217

約数の個数: 96

約数和(自身を含む): 47588452560

約数和(自身を除く): 27586467640

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 430, 620, 860, 961, 1240, 1333, 1720, 1922, 2666, 3844, 4805, 5332, 6665, 7688, 9610, 10664, 12101, 13330, 19220, 24202, 26660, 38440, 41323, 48404, 53320, 60505, 82646, 96808, 121010, 165292, 206615, 242020, 330584, 375131, 413230, 484040, 520343, 750262, 826460, 1040686, 1500524, 1652920, 1875655, 2081372, 2601715, 3001048, 3751310, 4162744, 5203430, 7502620, 10406860, 11629061, 15005240, 16130633, 20813720, 23258122, 32261266, 46516244, 58145305, 64522532, 80653165, 93032488, 116290610, 129045064, 161306330, 232581220, 322612660, 465162440, 500049623, 645225320, 1000099246, 2000198492, 2500248115, 4000396984, 5000496230, 10000992460, 20001984920]

約数ペア:

[(1, 20001984920), (2, 10000992460), (4, 5000496230), (5, 4000396984), (8, 2500248115), (10, 2000198492), (20, 1000099246), (31, 645225320), (40, 500049623), (43, 465162440), (62, 322612660), (86, 232581220), (124, 161306330), (155, 129045064), (172, 116290610), (215, 93032488), (248, 80653165), (310, 64522532), (344, 58145305), (430, 46516244), (620, 32261266), (860, 23258122), (961, 20813720), (1240, 16130633), (1333, 15005240), (1720, 11629061), (1922, 10406860), (2666, 7502620), (3844, 5203430), (4805, 4162744), (5332, 3751310), (6665, 3001048), (7688, 2601715), (9610, 2081372), (10664, 1875655), (12101, 1652920), (13330, 1500524), (19220, 1040686), (24202, 826460), (26660, 750262), (38440, 520343), (41323, 484040), (48404, 413230), (53320, 375131), (60505, 330584), (82646, 242020), (96808, 206615), (121010, 165292)]