1990204860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{4738583}}^1$

素因数の和:4738602

約数の個数: 48

約数和(自身を含む): 6368656896

約数和(自身を除く): 4378452036

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 4738583, 9477166, 14215749, 18954332, 23692915, 28431498, 33170081, 47385830, 56862996, 66340162, 71078745, 94771660, 99510243, 132680324, 142157490, 165850405, 199020486, 284314980, 331700810, 398040972, 497551215, 663401620, 995102430, 1990204860]

約数ペア:

[(1, 1990204860), (2, 995102430), (3, 663401620), (4, 497551215), (5, 398040972), (6, 331700810), (7, 284314980), (10, 199020486), (12, 165850405), (14, 142157490), (15, 132680324), (20, 99510243), (21, 94771660), (28, 71078745), (30, 66340162), (35, 56862996), (42, 47385830), (60, 33170081), (70, 28431498), (84, 23692915), (105, 18954332), (140, 14215749), (210, 9477166), (420, 4738583)]