217307580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{517399}}^1$

素因数の和:517418

約数の個数: 48

約数和(自身を含む): 695385600

約数和(自身を除く): 478078020

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, 517399, 1034798, 1552197, 2069596, 2586995, 3104394, 3621793, 5173990, 6208788, 7243586, 7760985, 10347980, 10865379, 14487172, 15521970, 18108965, 21730758, 31043940, 36217930, 43461516, 54326895, 72435860, 108653790, 217307580]

約数ペア:

[(1, 217307580), (2, 108653790), (3, 72435860), (4, 54326895), (5, 43461516), (6, 36217930), (7, 31043940), (10, 21730758), (12, 18108965), (14, 15521970), (15, 14487172), (20, 10865379), (21, 10347980), (28, 7760985), (30, 7243586), (35, 6208788), (42, 5173990), (60, 3621793), (70, 3104394), (84, 2586995), (105, 2069596), (140, 1552197), (210, 1034798), (420, 517399)]