254437120

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:490

約数の個数: 144

約数和(自身を含む): 707878080

約数和(自身を除く): 453440960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 73, 80, 112, 128, 140, 146, 160, 224, 256, 280, 292, 320, 365, 389, 448, 511, 560, 584, 640, 730, 778, 896, 1022, 1120, 1168, 1280, 1460, 1556, 1792, 1945, 2044, 2240, 2336, 2555, 2723, 2920, 3112, 3890, 4088, 4480, 4672, 5110, 5446, 5840, 6224, 7780, 8176, 8960, 9344, 10220, 10892, 11680, 12448, 13615, 15560, 16352, 18688, 20440, 21784, 23360, 24896, 27230, 28397, 31120, 32704, 40880, 43568, 46720, 49792, 54460, 56794, 62240, 65408, 81760, 87136, 93440, 99584, 108920, 113588, 124480, 130816, 141985, 163520, 174272, 198779, 217840, 227176, 248960, 283970, 327040, 348544, 397558, 435680, 454352, 497920, 567940, 654080, 697088, 795116, 871360, 908704, 993895, 1135880, 1590232, 1742720, 1817408, 1987790, 2271760, 3180464, 3485440, 3634816, 3975580, 4543520, 6360928, 7269632, 7951160, 9087040, 12721856, 15902320, 18174080, 25443712, 31804640, 36348160, 50887424, 63609280, 127218560, 254437120]

約数ペア:

[(1, 254437120), (2, 127218560), (4, 63609280), (5, 50887424), (7, 36348160), (8, 31804640), (10, 25443712), (14, 18174080), (16, 15902320), (20, 12721856), (28, 9087040), (32, 7951160), (35, 7269632), (40, 6360928), (56, 4543520), (64, 3975580), (70, 3634816), (73, 3485440), (80, 3180464), (112, 2271760), (128, 1987790), (140, 1817408), (146, 1742720), (160, 1590232), (224, 1135880), (256, 993895), (280, 908704), (292, 871360), (320, 795116), (365, 697088), (389, 654080), (448, 567940), (511, 497920), (560, 454352), (584, 435680), (640, 397558), (730, 348544), (778, 327040), (896, 283970), (1022, 248960), (1120, 227176), (1168, 217840), (1280, 198779), (1460, 174272), (1556, 163520), (1792, 141985), (1945, 130816), (2044, 124480), (2240, 113588), (2336, 108920), (2555, 99584), (2723, 93440), (2920, 87136), (3112, 81760), (3890, 65408), (4088, 62240), (4480, 56794), (4672, 54460), (5110, 49792), (5446, 46720), (5840, 43568), (6224, 40880), (7780, 32704), (8176, 31120), (8960, 28397), (9344, 27230), (10220, 24896), (10892, 23360), (11680, 21784), (12448, 20440), (13615, 18688), (15560, 16352)]