21035320

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 28316360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 67, 94, 134, 167, 188, 235, 268, 334, 335, 376, 470, 536, 668, 670, 835, 940, 1336, 1340, 1670, 1880, 2680, 3149, 3340, 6298, 6680, 7849, 11189, 12596, 15698, 15745, 22378, 25192, 31396, 31490, 39245, 44756, 55945, 62792, 62980, 78490, 89512, 111890, 125960, 156980, 223780, 313960, 447560, 525883, 1051766, 2103532, 2629415, 4207064, 5258830, 10517660, 21035320]

約数ペア:

[(1, 21035320), (2, 10517660), (4, 5258830), (5, 4207064), (8, 2629415), (10, 2103532), (20, 1051766), (40, 525883), (47, 447560), (67, 313960), (94, 223780), (134, 156980), (167, 125960), (188, 111890), (235, 89512), (268, 78490), (334, 62980), (335, 62792), (376, 55945), (470, 44756), (536, 39245), (668, 31490), (670, 31396), (835, 25192), (940, 22378), (1336, 15745), (1340, 15698), (1670, 12596), (1880, 11189), (2680, 7849), (3149, 6680), (3340, 6298)]