21198110

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:177

約数の個数: 64

約数和(自身を含む): 42854400

約数和(自身を除く): 21656290

約数列:

[1, 2, 5, 10, 19, 31, 38, 59, 61, 62, 95, 118, 122, 155, 190, 295, 305, 310, 589, 590, 610, 1121, 1159, 1178, 1829, 1891, 2242, 2318, 2945, 3599, 3658, 3782, 5605, 5795, 5890, 7198, 9145, 9455, 11210, 11590, 17995, 18290, 18910, 34751, 35929, 35990, 68381, 69502, 71858, 111569, 136762, 173755, 179645, 223138, 341905, 347510, 359290, 557845, 683810, 1115690, 2119811, 4239622, 10599055, 21198110]

約数ペア:

[(1, 21198110), (2, 10599055), (5, 4239622), (10, 2119811), (19, 1115690), (31, 683810), (38, 557845), (59, 359290), (61, 347510), (62, 341905), (95, 223138), (118, 179645), (122, 173755), (155, 136762), (190, 111569), (295, 71858), (305, 69502), (310, 68381), (589, 35990), (590, 35929), (610, 34751), (1121, 18910), (1159, 18290), (1178, 17995), (1829, 11590), (1891, 11210), (2242, 9455), (2318, 9145), (2945, 7198), (3599, 5890), (3658, 5795), (3782, 5605)]