21323820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7253}}^1$

素因数の和:7279

約数の個数: 72

約数和(自身を含む): 69464304

約数和(自身を除く): 48140484

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7253, 14506, 21759, 29012, 36265, 43518, 50771, 72530, 87036, 101542, 108795, 145060, 152313, 203084, 217590, 253855, 304626, 355397, 435180, 507710, 609252, 710794, 761565, 1015420, 1066191, 1421588, 1523130, 1776985, 2132382, 3046260, 3553970, 4264764, 5330955, 7107940, 10661910, 21323820]

約数ペア:

[(1, 21323820), (2, 10661910), (3, 7107940), (4, 5330955), (5, 4264764), (6, 3553970), (7, 3046260), (10, 2132382), (12, 1776985), (14, 1523130), (15, 1421588), (20, 1066191), (21, 1015420), (28, 761565), (30, 710794), (35, 609252), (42, 507710), (49, 435180), (60, 355397), (70, 304626), (84, 253855), (98, 217590), (105, 203084), (140, 152313), (147, 145060), (196, 108795), (210, 101542), (245, 87036), (294, 72530), (420, 50771), (490, 43518), (588, 36265), (735, 29012), (980, 21759), (1470, 14506), (2940, 7253)]