21038360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{331}}^1$

素因数の和:576

約数の個数: 64

約数和(自身を含む): 54501120

約数和(自身を除く): 33462760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 227, 280, 331, 454, 662, 908, 1135, 1324, 1589, 1655, 1816, 2270, 2317, 2648, 3178, 3310, 4540, 4634, 6356, 6620, 7945, 9080, 9268, 11585, 12712, 13240, 15890, 18536, 23170, 31780, 46340, 63560, 75137, 92680, 150274, 300548, 375685, 525959, 601096, 751370, 1051918, 1502740, 2103836, 2629795, 3005480, 4207672, 5259590, 10519180, 21038360]

約数ペア:

[(1, 21038360), (2, 10519180), (4, 5259590), (5, 4207672), (7, 3005480), (8, 2629795), (10, 2103836), (14, 1502740), (20, 1051918), (28, 751370), (35, 601096), (40, 525959), (56, 375685), (70, 300548), (140, 150274), (227, 92680), (280, 75137), (331, 63560), (454, 46340), (662, 31780), (908, 23170), (1135, 18536), (1324, 15890), (1589, 13240), (1655, 12712), (1816, 11585), (2270, 9268), (2317, 9080), (2648, 7945), (3178, 6620), (3310, 6356), (4540, 4634)]