387904020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{923581}}^1$

素因数の和:923600

約数の個数: 48

約数和(自身を含む): 1241294208

約数和(自身を除く): 853390188

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, 923581, 1847162, 2770743, 3694324, 4617905, 5541486, 6465067, 9235810, 11082972, 12930134, 13853715, 18471620, 19395201, 25860268, 27707430, 32325335, 38790402, 55414860, 64650670, 77580804, 96976005, 129301340, 193952010, 387904020]

約数ペア:

[(1, 387904020), (2, 193952010), (3, 129301340), (4, 96976005), (5, 77580804), (6, 64650670), (7, 55414860), (10, 38790402), (12, 32325335), (14, 27707430), (15, 25860268), (20, 19395201), (21, 18471620), (28, 13853715), (30, 12930134), (35, 11082972), (42, 9235810), (60, 6465067), (70, 5541486), (84, 4617905), (105, 3694324), (140, 2770743), (210, 1847162), (420, 923581)]