1640456480

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{2729}}^1$

素因数の和:2791

約数の個数: 144

約数和(自身を含む): 4435278120

約数和(自身を除く): 2794821640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 160, 170, 208, 221, 260, 272, 289, 340, 416, 442, 520, 544, 578, 680, 884, 1040, 1105, 1156, 1360, 1445, 1768, 2080, 2210, 2312, 2720, 2729, 2890, 3536, 3757, 4420, 4624, 5458, 5780, 7072, 7514, 8840, 9248, 10916, 11560, 13645, 15028, 17680, 18785, 21832, 23120, 27290, 30056, 35360, 35477, 37570, 43664, 46240, 46393, 54580, 60112, 70954, 75140, 87328, 92786, 109160, 120224, 141908, 150280, 177385, 185572, 218320, 231965, 283816, 300560, 354770, 371144, 436640, 463930, 567632, 601120, 603109, 709540, 742288, 788681, 927860, 1135264, 1206218, 1419080, 1484576, 1577362, 1855720, 2412436, 2838160, 3015545, 3154724, 3711440, 3943405, 4824872, 5676320, 6031090, 6309448, 7422880, 7886810, 9649744, 10252853, 12062180, 12618896, 15773620, 19299488, 20505706, 24124360, 25237792, 31547240, 41011412, 48248720, 51264265, 63094480, 82022824, 96497440, 102528530, 126188960, 164045648, 205057060, 328091296, 410114120, 820228240, 1640456480]

約数ペア:

[(1, 1640456480), (2, 820228240), (4, 410114120), (5, 328091296), (8, 205057060), (10, 164045648), (13, 126188960), (16, 102528530), (17, 96497440), (20, 82022824), (26, 63094480), (32, 51264265), (34, 48248720), (40, 41011412), (52, 31547240), (65, 25237792), (68, 24124360), (80, 20505706), (85, 19299488), (104, 15773620), (130, 12618896), (136, 12062180), (160, 10252853), (170, 9649744), (208, 7886810), (221, 7422880), (260, 6309448), (272, 6031090), (289, 5676320), (340, 4824872), (416, 3943405), (442, 3711440), (520, 3154724), (544, 3015545), (578, 2838160), (680, 2412436), (884, 1855720), (1040, 1577362), (1105, 1484576), (1156, 1419080), (1360, 1206218), (1445, 1135264), (1768, 927860), (2080, 788681), (2210, 742288), (2312, 709540), (2720, 603109), (2729, 601120), (2890, 567632), (3536, 463930), (3757, 436640), (4420, 371144), (4624, 354770), (5458, 300560), (5780, 283816), (7072, 231965), (7514, 218320), (8840, 185572), (9248, 177385), (10916, 150280), (11560, 141908), (13645, 120224), (15028, 109160), (17680, 92786), (18785, 87328), (21832, 75140), (23120, 70954), (27290, 60112), (30056, 54580), (35360, 46393), (35477, 46240), (37570, 43664)]