20873920

素因数分解:

$2^6\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:138

約数の個数: 112

約数和(自身を含む): 53510688

約数和(自身を除く): 32636768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 41, 43, 64, 74, 80, 82, 86, 148, 160, 164, 172, 185, 205, 215, 296, 320, 328, 344, 370, 410, 430, 592, 656, 688, 740, 820, 860, 1184, 1312, 1376, 1480, 1517, 1591, 1640, 1720, 1763, 2368, 2624, 2752, 2960, 3034, 3182, 3280, 3440, 3526, 5920, 6068, 6364, 6560, 6880, 7052, 7585, 7955, 8815, 11840, 12136, 12728, 13120, 13760, 14104, 15170, 15910, 17630, 24272, 25456, 28208, 30340, 31820, 35260, 48544, 50912, 56416, 60680, 63640, 65231, 70520, 97088, 101824, 112832, 121360, 127280, 130462, 141040, 242720, 254560, 260924, 282080, 326155, 485440, 509120, 521848, 564160, 652310, 1043696, 1304620, 2087392, 2609240, 4174784, 5218480, 10436960, 20873920]

約数ペア:

[(1, 20873920), (2, 10436960), (4, 5218480), (5, 4174784), (8, 2609240), (10, 2087392), (16, 1304620), (20, 1043696), (32, 652310), (37, 564160), (40, 521848), (41, 509120), (43, 485440), (64, 326155), (74, 282080), (80, 260924), (82, 254560), (86, 242720), (148, 141040), (160, 130462), (164, 127280), (172, 121360), (185, 112832), (205, 101824), (215, 97088), (296, 70520), (320, 65231), (328, 63640), (344, 60680), (370, 56416), (410, 50912), (430, 48544), (592, 35260), (656, 31820), (688, 30340), (740, 28208), (820, 25456), (860, 24272), (1184, 17630), (1312, 15910), (1376, 15170), (1480, 14104), (1517, 13760), (1591, 13120), (1640, 12728), (1720, 12136), (1763, 11840), (2368, 8815), (2624, 7955), (2752, 7585), (2960, 7052), (3034, 6880), (3182, 6560), (3280, 6364), (3440, 6068), (3526, 5920)]