19808040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23581}}^1$

素因数の和:23602

約数の個数: 64

約数和(自身を含む): 67916160

約数和(自身を除く): 48108120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 23581, 47162, 70743, 94324, 117905, 141486, 165067, 188648, 235810, 282972, 330134, 353715, 471620, 495201, 565944, 660268, 707430, 825335, 943240, 990402, 1320536, 1414860, 1650670, 1980804, 2476005, 2829720, 3301340, 3961608, 4952010, 6602680, 9904020, 19808040]

約数ペア:

[(1, 19808040), (2, 9904020), (3, 6602680), (4, 4952010), (5, 3961608), (6, 3301340), (7, 2829720), (8, 2476005), (10, 1980804), (12, 1650670), (14, 1414860), (15, 1320536), (20, 990402), (21, 943240), (24, 825335), (28, 707430), (30, 660268), (35, 565944), (40, 495201), (42, 471620), (56, 353715), (60, 330134), (70, 282972), (84, 235810), (105, 188648), (120, 165067), (140, 141486), (168, 117905), (210, 94324), (280, 70743), (420, 47162), (840, 23581)]