19762640

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:204

約数の個数: 80

約数和(自身を含む): 48211200

約数和(自身を除く): 28448560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 59, 79, 80, 106, 118, 158, 212, 236, 265, 295, 316, 395, 424, 472, 530, 590, 632, 790, 848, 944, 1060, 1180, 1264, 1580, 2120, 2360, 3127, 3160, 4187, 4240, 4661, 4720, 6254, 6320, 8374, 9322, 12508, 15635, 16748, 18644, 20935, 23305, 25016, 31270, 33496, 37288, 41870, 46610, 50032, 62540, 66992, 74576, 83740, 93220, 125080, 167480, 186440, 247033, 250160, 334960, 372880, 494066, 988132, 1235165, 1976264, 2470330, 3952528, 4940660, 9881320, 19762640]

約数ペア:

[(1, 19762640), (2, 9881320), (4, 4940660), (5, 3952528), (8, 2470330), (10, 1976264), (16, 1235165), (20, 988132), (40, 494066), (53, 372880), (59, 334960), (79, 250160), (80, 247033), (106, 186440), (118, 167480), (158, 125080), (212, 93220), (236, 83740), (265, 74576), (295, 66992), (316, 62540), (395, 50032), (424, 46610), (472, 41870), (530, 37288), (590, 33496), (632, 31270), (790, 25016), (848, 23305), (944, 20935), (1060, 18644), (1180, 16748), (1264, 15635), (1580, 12508), (2120, 9322), (2360, 8374), (3127, 6320), (3160, 6254), (4187, 4720), (4240, 4661)]