21527950

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:122

約数の個数: 96

約数和(自身を含む): 47139840

約数和(自身を除く): 25611890

約数列:

[1, 2, 5, 10, 17, 19, 25, 31, 34, 38, 43, 50, 62, 85, 86, 95, 155, 170, 190, 215, 310, 323, 425, 430, 475, 527, 589, 646, 731, 775, 817, 850, 950, 1054, 1075, 1178, 1333, 1462, 1550, 1615, 1634, 2150, 2635, 2666, 2945, 3230, 3655, 4085, 5270, 5890, 6665, 7310, 8075, 8170, 10013, 13175, 13330, 13889, 14725, 16150, 18275, 20026, 20425, 22661, 25327, 26350, 27778, 29450, 33325, 36550, 40850, 45322, 50065, 50654, 66650, 69445, 100130, 113305, 126635, 138890, 226610, 250325, 253270, 347225, 430559, 500650, 566525, 633175, 694450, 861118, 1133050, 1266350, 2152795, 4305590, 10763975, 21527950]

約数ペア:

[(1, 21527950), (2, 10763975), (5, 4305590), (10, 2152795), (17, 1266350), (19, 1133050), (25, 861118), (31, 694450), (34, 633175), (38, 566525), (43, 500650), (50, 430559), (62, 347225), (85, 253270), (86, 250325), (95, 226610), (155, 138890), (170, 126635), (190, 113305), (215, 100130), (310, 69445), (323, 66650), (425, 50654), (430, 50065), (475, 45322), (527, 40850), (589, 36550), (646, 33325), (731, 29450), (775, 27778), (817, 26350), (850, 25327), (950, 22661), (1054, 20425), (1075, 20026), (1178, 18275), (1333, 16150), (1462, 14725), (1550, 13889), (1615, 13330), (1634, 13175), (2150, 10013), (2635, 8170), (2666, 8075), (2945, 7310), (3230, 6665), (3655, 5890), (4085, 5270)]