21213400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 54684000

約数和(自身を除く): 33470600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 41, 50, 52, 65, 82, 100, 104, 130, 164, 199, 200, 205, 260, 325, 328, 398, 410, 520, 533, 650, 796, 820, 995, 1025, 1066, 1300, 1592, 1640, 1990, 2050, 2132, 2587, 2600, 2665, 3980, 4100, 4264, 4975, 5174, 5330, 7960, 8159, 8200, 9950, 10348, 10660, 12935, 13325, 16318, 19900, 20696, 21320, 25870, 26650, 32636, 39800, 40795, 51740, 53300, 64675, 65272, 81590, 103480, 106067, 106600, 129350, 163180, 203975, 212134, 258700, 326360, 407950, 424268, 517400, 530335, 815900, 848536, 1060670, 1631800, 2121340, 2651675, 4242680, 5303350, 10606700, 21213400]

約数ペア:

[(1, 21213400), (2, 10606700), (4, 5303350), (5, 4242680), (8, 2651675), (10, 2121340), (13, 1631800), (20, 1060670), (25, 848536), (26, 815900), (40, 530335), (41, 517400), (50, 424268), (52, 407950), (65, 326360), (82, 258700), (100, 212134), (104, 203975), (130, 163180), (164, 129350), (199, 106600), (200, 106067), (205, 103480), (260, 81590), (325, 65272), (328, 64675), (398, 53300), (410, 51740), (520, 40795), (533, 39800), (650, 32636), (796, 26650), (820, 25870), (995, 21320), (1025, 20696), (1066, 19900), (1300, 16318), (1592, 13325), (1640, 12935), (1990, 10660), (2050, 10348), (2132, 9950), (2587, 8200), (2600, 8159), (2665, 7960), (3980, 5330), (4100, 5174), (4264, 4975)]