20393640

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{821}}^1$

素因数の和:864

約数の個数: 128

約数和(自身を含む): 71020800

約数和(自身を除く): 50627160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 27, 30, 36, 40, 45, 46, 54, 60, 69, 72, 90, 92, 108, 115, 120, 135, 138, 180, 184, 207, 216, 230, 270, 276, 345, 360, 414, 460, 540, 552, 621, 690, 821, 828, 920, 1035, 1080, 1242, 1380, 1642, 1656, 2070, 2463, 2484, 2760, 3105, 3284, 4105, 4140, 4926, 4968, 6210, 6568, 7389, 8210, 8280, 9852, 12315, 12420, 14778, 16420, 18883, 19704, 22167, 24630, 24840, 29556, 32840, 36945, 37766, 44334, 49260, 56649, 59112, 73890, 75532, 88668, 94415, 98520, 110835, 113298, 147780, 151064, 169947, 177336, 188830, 221670, 226596, 283245, 295560, 339894, 377660, 443340, 453192, 509841, 566490, 679788, 755320, 849735, 886680, 1019682, 1132980, 1359576, 1699470, 2039364, 2265960, 2549205, 3398940, 4078728, 5098410, 6797880, 10196820, 20393640]

約数ペア:

[(1, 20393640), (2, 10196820), (3, 6797880), (4, 5098410), (5, 4078728), (6, 3398940), (8, 2549205), (9, 2265960), (10, 2039364), (12, 1699470), (15, 1359576), (18, 1132980), (20, 1019682), (23, 886680), (24, 849735), (27, 755320), (30, 679788), (36, 566490), (40, 509841), (45, 453192), (46, 443340), (54, 377660), (60, 339894), (69, 295560), (72, 283245), (90, 226596), (92, 221670), (108, 188830), (115, 177336), (120, 169947), (135, 151064), (138, 147780), (180, 113298), (184, 110835), (207, 98520), (216, 94415), (230, 88668), (270, 75532), (276, 73890), (345, 59112), (360, 56649), (414, 49260), (460, 44334), (540, 37766), (552, 36945), (621, 32840), (690, 29556), (821, 24840), (828, 24630), (920, 22167), (1035, 19704), (1080, 18883), (1242, 16420), (1380, 14778), (1642, 12420), (1656, 12315), (2070, 9852), (2463, 8280), (2484, 8210), (2760, 7389), (3105, 6568), (3284, 6210), (4105, 4968), (4140, 4926)]