21782800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:161

約数の個数: 120

約数和(自身を含む): 58121280

約数和(自身を除く): 36338480

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 59, 65, 71, 80, 100, 104, 118, 130, 142, 200, 208, 236, 260, 284, 295, 325, 355, 400, 472, 520, 568, 590, 650, 710, 767, 923, 944, 1040, 1136, 1180, 1300, 1420, 1475, 1534, 1775, 1846, 2360, 2600, 2840, 2950, 3068, 3550, 3692, 3835, 4189, 4615, 4720, 5200, 5680, 5900, 6136, 7100, 7384, 7670, 8378, 9230, 11800, 12272, 14200, 14768, 15340, 16756, 18460, 19175, 20945, 23075, 23600, 28400, 30680, 33512, 36920, 38350, 41890, 46150, 54457, 61360, 67024, 73840, 76700, 83780, 92300, 104725, 108914, 153400, 167560, 184600, 209450, 217828, 272285, 306800, 335120, 369200, 418900, 435656, 544570, 837800, 871312, 1089140, 1361425, 1675600, 2178280, 2722850, 4356560, 5445700, 10891400, 21782800]

約数ペア:

[(1, 21782800), (2, 10891400), (4, 5445700), (5, 4356560), (8, 2722850), (10, 2178280), (13, 1675600), (16, 1361425), (20, 1089140), (25, 871312), (26, 837800), (40, 544570), (50, 435656), (52, 418900), (59, 369200), (65, 335120), (71, 306800), (80, 272285), (100, 217828), (104, 209450), (118, 184600), (130, 167560), (142, 153400), (200, 108914), (208, 104725), (236, 92300), (260, 83780), (284, 76700), (295, 73840), (325, 67024), (355, 61360), (400, 54457), (472, 46150), (520, 41890), (568, 38350), (590, 36920), (650, 33512), (710, 30680), (767, 28400), (923, 23600), (944, 23075), (1040, 20945), (1136, 19175), (1180, 18460), (1300, 16756), (1420, 15340), (1475, 14768), (1534, 14200), (1775, 12272), (1846, 11800), (2360, 9230), (2600, 8378), (2840, 7670), (2950, 7384), (3068, 7100), (3550, 6136), (3692, 5900), (3835, 5680), (4189, 5200), (4615, 4720)]