256939440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{523}}^1$

素因数の和:651

約数の個数: 160

約数和(自身を含む): 842088960

約数和(自身を除く): 585149520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 89, 92, 115, 120, 138, 178, 184, 230, 240, 267, 276, 345, 356, 368, 445, 460, 523, 534, 552, 690, 712, 890, 920, 1046, 1068, 1104, 1335, 1380, 1424, 1569, 1780, 1840, 2047, 2092, 2136, 2615, 2670, 2760, 3138, 3560, 4094, 4184, 4272, 5230, 5340, 5520, 6141, 6276, 7120, 7845, 8188, 8368, 10235, 10460, 10680, 12029, 12282, 12552, 15690, 16376, 20470, 20920, 21360, 24058, 24564, 25104, 30705, 31380, 32752, 36087, 40940, 41840, 46547, 48116, 49128, 60145, 61410, 62760, 72174, 81880, 93094, 96232, 98256, 120290, 122820, 125520, 139641, 144348, 163760, 180435, 186188, 192464, 232735, 240580, 245640, 279282, 288696, 360870, 372376, 465470, 481160, 491280, 558564, 577392, 698205, 721740, 744752, 930940, 962320, 1070581, 1117128, 1396410, 1443480, 1861880, 2141162, 2234256, 2792820, 2886960, 3211743, 3723760, 4282324, 5352905, 5585640, 6423486, 8564648, 10705810, 11171280, 12846972, 16058715, 17129296, 21411620, 25693944, 32117430, 42823240, 51387888, 64234860, 85646480, 128469720, 256939440]

約数ペア:

[(1, 256939440), (2, 128469720), (3, 85646480), (4, 64234860), (5, 51387888), (6, 42823240), (8, 32117430), (10, 25693944), (12, 21411620), (15, 17129296), (16, 16058715), (20, 12846972), (23, 11171280), (24, 10705810), (30, 8564648), (40, 6423486), (46, 5585640), (48, 5352905), (60, 4282324), (69, 3723760), (80, 3211743), (89, 2886960), (92, 2792820), (115, 2234256), (120, 2141162), (138, 1861880), (178, 1443480), (184, 1396410), (230, 1117128), (240, 1070581), (267, 962320), (276, 930940), (345, 744752), (356, 721740), (368, 698205), (445, 577392), (460, 558564), (523, 491280), (534, 481160), (552, 465470), (690, 372376), (712, 360870), (890, 288696), (920, 279282), (1046, 245640), (1068, 240580), (1104, 232735), (1335, 192464), (1380, 186188), (1424, 180435), (1569, 163760), (1780, 144348), (1840, 139641), (2047, 125520), (2092, 122820), (2136, 120290), (2615, 98256), (2670, 96232), (2760, 93094), (3138, 81880), (3560, 72174), (4094, 62760), (4184, 61410), (4272, 60145), (5230, 49128), (5340, 48116), (5520, 46547), (6141, 41840), (6276, 40940), (7120, 36087), (7845, 32752), (8188, 31380), (8368, 30705), (10235, 25104), (10460, 24564), (10680, 24058), (12029, 21360), (12282, 20920), (12552, 20470), (15690, 16376)]