19917840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2243}}^1$

素因数の和:2296

約数の個数: 80

約数和(自身を含む): 63442368

約数和(自身を除く): 43524528

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 37, 40, 48, 60, 74, 80, 111, 120, 148, 185, 222, 240, 296, 370, 444, 555, 592, 740, 888, 1110, 1480, 1776, 2220, 2243, 2960, 4440, 4486, 6729, 8880, 8972, 11215, 13458, 17944, 22430, 26916, 33645, 35888, 44860, 53832, 67290, 82991, 89720, 107664, 134580, 165982, 179440, 248973, 269160, 331964, 414955, 497946, 538320, 663928, 829910, 995892, 1244865, 1327856, 1659820, 1991784, 2489730, 3319640, 3983568, 4979460, 6639280, 9958920, 19917840]

約数ペア:

[(1, 19917840), (2, 9958920), (3, 6639280), (4, 4979460), (5, 3983568), (6, 3319640), (8, 2489730), (10, 1991784), (12, 1659820), (15, 1327856), (16, 1244865), (20, 995892), (24, 829910), (30, 663928), (37, 538320), (40, 497946), (48, 414955), (60, 331964), (74, 269160), (80, 248973), (111, 179440), (120, 165982), (148, 134580), (185, 107664), (222, 89720), (240, 82991), (296, 67290), (370, 53832), (444, 44860), (555, 35888), (592, 33645), (740, 26916), (888, 22430), (1110, 17944), (1480, 13458), (1776, 11215), (2220, 8972), (2243, 8880), (2960, 6729), (4440, 4486)]