256386480

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1511}}^1$

素因数の和:1635

約数の個数: 160

約数和(自身を含む): 917941248

約数和(自身を除く): 661554768

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 101, 105, 112, 120, 140, 168, 202, 210, 240, 280, 303, 336, 404, 420, 505, 560, 606, 707, 808, 840, 1010, 1212, 1414, 1511, 1515, 1616, 1680, 2020, 2121, 2424, 2828, 3022, 3030, 3535, 4040, 4242, 4533, 4848, 5656, 6044, 6060, 7070, 7555, 8080, 8484, 9066, 10577, 10605, 11312, 12088, 12120, 14140, 15110, 16968, 18132, 21154, 21210, 22665, 24176, 24240, 28280, 30220, 31731, 33936, 36264, 42308, 42420, 45330, 52885, 56560, 60440, 63462, 72528, 84616, 84840, 90660, 105770, 120880, 126924, 152611, 158655, 169232, 169680, 181320, 211540, 253848, 305222, 317310, 362640, 423080, 457833, 507696, 610444, 634620, 763055, 846160, 915666, 1068277, 1220888, 1269240, 1526110, 1831332, 2136554, 2289165, 2441776, 2538480, 3052220, 3204831, 3662664, 4273108, 4578330, 5341385, 6104440, 6409662, 7325328, 8546216, 9156660, 10682770, 12208880, 12819324, 16024155, 17092432, 18313320, 21365540, 25638648, 32048310, 36626640, 42731080, 51277296, 64096620, 85462160, 128193240, 256386480]

約数ペア:

[(1, 256386480), (2, 128193240), (3, 85462160), (4, 64096620), (5, 51277296), (6, 42731080), (7, 36626640), (8, 32048310), (10, 25638648), (12, 21365540), (14, 18313320), (15, 17092432), (16, 16024155), (20, 12819324), (21, 12208880), (24, 10682770), (28, 9156660), (30, 8546216), (35, 7325328), (40, 6409662), (42, 6104440), (48, 5341385), (56, 4578330), (60, 4273108), (70, 3662664), (80, 3204831), (84, 3052220), (101, 2538480), (105, 2441776), (112, 2289165), (120, 2136554), (140, 1831332), (168, 1526110), (202, 1269240), (210, 1220888), (240, 1068277), (280, 915666), (303, 846160), (336, 763055), (404, 634620), (420, 610444), (505, 507696), (560, 457833), (606, 423080), (707, 362640), (808, 317310), (840, 305222), (1010, 253848), (1212, 211540), (1414, 181320), (1511, 169680), (1515, 169232), (1616, 158655), (1680, 152611), (2020, 126924), (2121, 120880), (2424, 105770), (2828, 90660), (3022, 84840), (3030, 84616), (3535, 72528), (4040, 63462), (4242, 60440), (4533, 56560), (4848, 52885), (5656, 45330), (6044, 42420), (6060, 42308), (7070, 36264), (7555, 33936), (8080, 31731), (8484, 30220), (9066, 28280), (10577, 24240), (10605, 24176), (11312, 22665), (12088, 21210), (12120, 21154), (14140, 18132), (15110, 16968)]