20573865

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{617}}^1$

素因数の和:663

約数の個数: 64

約数和(自身を含む): 41529600

約数和(自身を除く): 20955735

約数列:

[1, 3, 5, 9, 13, 15, 19, 27, 39, 45, 57, 65, 95, 117, 135, 171, 195, 247, 285, 351, 513, 585, 617, 741, 855, 1235, 1755, 1851, 2223, 2565, 3085, 3705, 5553, 6669, 8021, 9255, 11115, 11723, 16659, 24063, 27765, 33345, 35169, 40105, 58615, 72189, 83295, 105507, 120315, 152399, 175845, 216567, 316521, 360945, 457197, 527535, 761995, 1082835, 1371591, 1582605, 2285985, 4114773, 6857955, 20573865]

約数ペア:

[(1, 20573865), (3, 6857955), (5, 4114773), (9, 2285985), (13, 1582605), (15, 1371591), (19, 1082835), (27, 761995), (39, 527535), (45, 457197), (57, 360945), (65, 316521), (95, 216567), (117, 175845), (135, 152399), (171, 120315), (195, 105507), (247, 83295), (285, 72189), (351, 58615), (513, 40105), (585, 35169), (617, 33345), (741, 27765), (855, 24063), (1235, 16659), (1755, 11723), (1851, 11115), (2223, 9255), (2565, 8021), (3085, 6669), (3705, 5553)]