420778890

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{667903}}^1$

素因数の和:667923

約数の個数: 48

約数和(自身を含む): 1250316288

約数和(自身を除く): 829537398

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 667903, 1335806, 2003709, 3339515, 4007418, 4675321, 6011127, 6679030, 9350642, 10018545, 12022254, 14025963, 20037090, 23376605, 28051926, 30055635, 42077889, 46753210, 60111270, 70129815, 84155778, 140259630, 210389445, 420778890]

約数ペア:

[(1, 420778890), (2, 210389445), (3, 140259630), (5, 84155778), (6, 70129815), (7, 60111270), (9, 46753210), (10, 42077889), (14, 30055635), (15, 28051926), (18, 23376605), (21, 20037090), (30, 14025963), (35, 12022254), (42, 10018545), (45, 9350642), (63, 6679030), (70, 6011127), (90, 4675321), (105, 4007418), (126, 3339515), (210, 2003709), (315, 1335806), (630, 667903)]