19721570360

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{683}}^1\times {\mathrm{15359}}^1$

素因数の和:16100

約数の個数: 64

約数和(自身を含む): 45386956800

約数和(自身を除く): 25665386440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 683, 940, 1366, 1880, 2732, 3415, 5464, 6830, 13660, 15359, 27320, 30718, 32101, 61436, 64202, 76795, 122872, 128404, 153590, 160505, 256808, 307180, 321010, 614360, 642020, 721873, 1284040, 1443746, 2887492, 3609365, 5774984, 7218730, 10490197, 14437460, 20980394, 28874920, 41960788, 52450985, 83921576, 104901970, 209803940, 419607880, 493039259, 986078518, 1972157036, 2465196295, 3944314072, 4930392590, 9860785180, 19721570360]

約数ペア:

[(1, 19721570360), (2, 9860785180), (4, 4930392590), (5, 3944314072), (8, 2465196295), (10, 1972157036), (20, 986078518), (40, 493039259), (47, 419607880), (94, 209803940), (188, 104901970), (235, 83921576), (376, 52450985), (470, 41960788), (683, 28874920), (940, 20980394), (1366, 14437460), (1880, 10490197), (2732, 7218730), (3415, 5774984), (5464, 3609365), (6830, 2887492), (13660, 1443746), (15359, 1284040), (27320, 721873), (30718, 642020), (32101, 614360), (61436, 321010), (64202, 307180), (76795, 256808), (122872, 160505), (128404, 153590)]