400226320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^2\times {\mathrm{137}}^1$

素因数の和:269

約数の個数: 120

約数和(自身を含む): 1028824776

約数和(自身を除く): 628598456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 53, 65, 80, 104, 106, 130, 137, 208, 212, 260, 265, 274, 424, 520, 530, 548, 685, 689, 848, 1040, 1060, 1096, 1370, 1378, 1781, 2120, 2192, 2740, 2756, 2809, 3445, 3562, 4240, 5480, 5512, 5618, 6890, 7124, 7261, 8905, 10960, 11024, 11236, 13780, 14045, 14248, 14522, 17810, 22472, 27560, 28090, 28496, 29044, 35620, 36305, 36517, 44944, 55120, 56180, 58088, 71240, 72610, 73034, 94393, 112360, 116176, 142480, 145220, 146068, 182585, 188786, 224720, 290440, 292136, 365170, 377572, 384833, 471965, 580880, 584272, 730340, 755144, 769666, 943930, 1460680, 1510288, 1539332, 1887860, 1924165, 2921360, 3078664, 3775720, 3848330, 5002829, 6157328, 7551440, 7696660, 10005658, 15393320, 20011316, 25014145, 30786640, 40022632, 50028290, 80045264, 100056580, 200113160, 400226320]

約数ペア:

[(1, 400226320), (2, 200113160), (4, 100056580), (5, 80045264), (8, 50028290), (10, 40022632), (13, 30786640), (16, 25014145), (20, 20011316), (26, 15393320), (40, 10005658), (52, 7696660), (53, 7551440), (65, 6157328), (80, 5002829), (104, 3848330), (106, 3775720), (130, 3078664), (137, 2921360), (208, 1924165), (212, 1887860), (260, 1539332), (265, 1510288), (274, 1460680), (424, 943930), (520, 769666), (530, 755144), (548, 730340), (685, 584272), (689, 580880), (848, 471965), (1040, 384833), (1060, 377572), (1096, 365170), (1370, 292136), (1378, 290440), (1781, 224720), (2120, 188786), (2192, 182585), (2740, 146068), (2756, 145220), (2809, 142480), (3445, 116176), (3562, 112360), (4240, 94393), (5480, 73034), (5512, 72610), (5618, 71240), (6890, 58088), (7124, 56180), (7261, 55120), (8905, 44944), (10960, 36517), (11024, 36305), (11236, 35620), (13780, 29044), (14045, 28496), (14248, 28090), (14522, 27560), (17810, 22472)]