21506610

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:543

約数の個数: 64

約数和(自身を含む): 54743040

約数和(自身を除く): 33236430

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 71, 115, 138, 142, 213, 230, 345, 355, 426, 439, 690, 710, 878, 1065, 1317, 1633, 2130, 2195, 2634, 3266, 4390, 4899, 6585, 8165, 9798, 10097, 13170, 16330, 20194, 24495, 30291, 31169, 48990, 50485, 60582, 62338, 93507, 100970, 151455, 155845, 187014, 302910, 311690, 467535, 716887, 935070, 1433774, 2150661, 3584435, 4301322, 7168870, 10753305, 21506610]

約数ペア:

[(1, 21506610), (2, 10753305), (3, 7168870), (5, 4301322), (6, 3584435), (10, 2150661), (15, 1433774), (23, 935070), (30, 716887), (46, 467535), (69, 311690), (71, 302910), (115, 187014), (138, 155845), (142, 151455), (213, 100970), (230, 93507), (345, 62338), (355, 60582), (426, 50485), (439, 48990), (690, 31169), (710, 30291), (878, 24495), (1065, 20194), (1317, 16330), (1633, 13170), (2130, 10097), (2195, 9798), (2634, 8165), (3266, 6585), (4390, 4899)]