20967100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{389}}^1$

素因数の和:428

約数の個数: 108

約数和(自身を含む): 57886920

約数和(自身を除く): 36919820

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 49, 50, 55, 70, 77, 98, 100, 110, 140, 154, 175, 196, 220, 245, 275, 308, 350, 385, 389, 490, 539, 550, 700, 770, 778, 980, 1078, 1100, 1225, 1540, 1556, 1925, 1945, 2156, 2450, 2695, 2723, 3850, 3890, 4279, 4900, 5390, 5446, 7700, 7780, 8558, 9725, 10780, 10892, 13475, 13615, 17116, 19061, 19450, 21395, 26950, 27230, 29953, 38122, 38900, 42790, 53900, 54460, 59906, 68075, 76244, 85580, 95305, 106975, 119812, 136150, 149765, 190610, 209671, 213950, 272300, 299530, 381220, 419342, 427900, 476525, 599060, 748825, 838684, 953050, 1048355, 1497650, 1906100, 2096710, 2995300, 4193420, 5241775, 10483550, 20967100]

約数ペア:

[(1, 20967100), (2, 10483550), (4, 5241775), (5, 4193420), (7, 2995300), (10, 2096710), (11, 1906100), (14, 1497650), (20, 1048355), (22, 953050), (25, 838684), (28, 748825), (35, 599060), (44, 476525), (49, 427900), (50, 419342), (55, 381220), (70, 299530), (77, 272300), (98, 213950), (100, 209671), (110, 190610), (140, 149765), (154, 136150), (175, 119812), (196, 106975), (220, 95305), (245, 85580), (275, 76244), (308, 68075), (350, 59906), (385, 54460), (389, 53900), (490, 42790), (539, 38900), (550, 38122), (700, 29953), (770, 27230), (778, 26950), (980, 21395), (1078, 19450), (1100, 19061), (1225, 17116), (1540, 13615), (1556, 13475), (1925, 10892), (1945, 10780), (2156, 9725), (2450, 8558), (2695, 7780), (2723, 7700), (3850, 5446), (3890, 5390), (4279, 4900)]