398300840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{9547}}^1$

素因数の和:9714

約数の個数: 64

約数和(自身を含む): 1031184000

約数和(自身を除く): 632883160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 149, 280, 298, 596, 745, 1043, 1192, 1490, 2086, 2980, 4172, 5215, 5960, 8344, 9547, 10430, 19094, 20860, 38188, 41720, 47735, 66829, 76376, 95470, 133658, 190940, 267316, 334145, 381880, 534632, 668290, 1336580, 1422503, 2673160, 2845006, 5690012, 7112515, 9957521, 11380024, 14225030, 19915042, 28450060, 39830084, 49787605, 56900120, 79660168, 99575210, 199150420, 398300840]

約数ペア:

[(1, 398300840), (2, 199150420), (4, 99575210), (5, 79660168), (7, 56900120), (8, 49787605), (10, 39830084), (14, 28450060), (20, 19915042), (28, 14225030), (35, 11380024), (40, 9957521), (56, 7112515), (70, 5690012), (140, 2845006), (149, 2673160), (280, 1422503), (298, 1336580), (596, 668290), (745, 534632), (1043, 381880), (1192, 334145), (1490, 267316), (2086, 190940), (2980, 133658), (4172, 95470), (5215, 76376), (5960, 66829), (8344, 47735), (9547, 41720), (10430, 38188), (19094, 20860)]