21470440

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 29332760

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 83, 116, 145, 166, 223, 232, 290, 332, 415, 446, 580, 664, 830, 892, 1115, 1160, 1660, 1784, 2230, 2407, 3320, 4460, 4814, 6467, 8920, 9628, 12035, 12934, 18509, 19256, 24070, 25868, 32335, 37018, 48140, 51736, 64670, 74036, 92545, 96280, 129340, 148072, 185090, 258680, 370180, 536761, 740360, 1073522, 2147044, 2683805, 4294088, 5367610, 10735220, 21470440]

約数ペア:

[(1, 21470440), (2, 10735220), (4, 5367610), (5, 4294088), (8, 2683805), (10, 2147044), (20, 1073522), (29, 740360), (40, 536761), (58, 370180), (83, 258680), (116, 185090), (145, 148072), (166, 129340), (223, 96280), (232, 92545), (290, 74036), (332, 64670), (415, 51736), (446, 48140), (580, 37018), (664, 32335), (830, 25868), (892, 24070), (1115, 19256), (1160, 18509), (1660, 12934), (1784, 12035), (2230, 9628), (2407, 8920), (3320, 6467), (4460, 4814)]