18213520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 80

約数和(自身を含む): 46372032

約数和(自身を除く): 28158512

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 83, 104, 130, 166, 208, 211, 260, 332, 415, 422, 520, 664, 830, 844, 1040, 1055, 1079, 1328, 1660, 1688, 2110, 2158, 2743, 3320, 3376, 4220, 4316, 5395, 5486, 6640, 8440, 8632, 10790, 10972, 13715, 16880, 17264, 17513, 21580, 21944, 27430, 35026, 43160, 43888, 54860, 70052, 86320, 87565, 109720, 140104, 175130, 219440, 227669, 280208, 350260, 455338, 700520, 910676, 1138345, 1401040, 1821352, 2276690, 3642704, 4553380, 9106760, 18213520]

約数ペア:

[(1, 18213520), (2, 9106760), (4, 4553380), (5, 3642704), (8, 2276690), (10, 1821352), (13, 1401040), (16, 1138345), (20, 910676), (26, 700520), (40, 455338), (52, 350260), (65, 280208), (80, 227669), (83, 219440), (104, 175130), (130, 140104), (166, 109720), (208, 87565), (211, 86320), (260, 70052), (332, 54860), (415, 43888), (422, 43160), (520, 35026), (664, 27430), (830, 21944), (844, 21580), (1040, 17513), (1055, 17264), (1079, 16880), (1328, 13715), (1660, 10972), (1688, 10790), (2110, 8632), (2158, 8440), (2743, 6640), (3320, 5486), (3376, 5395), (4220, 4316)]