256163572

素因数分解:

$2^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{251}}^1$

素因数の和:437

約数の個数: 72

約数和(自身を含む): 540546048

約数和(自身を除く): 284382476

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 127, 164, 196, 251, 254, 287, 502, 508, 574, 889, 1004, 1148, 1757, 1778, 2009, 3514, 3556, 4018, 5207, 6223, 7028, 8036, 10291, 10414, 12299, 12446, 20582, 20828, 24598, 24892, 31877, 36449, 41164, 49196, 63754, 72037, 72898, 127508, 144074, 145796, 223139, 255143, 288148, 446278, 504259, 510286, 892556, 1008518, 1020572, 1306957, 1561973, 2017036, 2613914, 3123946, 5227828, 6247892, 9148699, 18297398, 36594796, 64040893, 128081786, 256163572]

約数ペア:

[(1, 256163572), (2, 128081786), (4, 64040893), (7, 36594796), (14, 18297398), (28, 9148699), (41, 6247892), (49, 5227828), (82, 3123946), (98, 2613914), (127, 2017036), (164, 1561973), (196, 1306957), (251, 1020572), (254, 1008518), (287, 892556), (502, 510286), (508, 504259), (574, 446278), (889, 288148), (1004, 255143), (1148, 223139), (1757, 145796), (1778, 144074), (2009, 127508), (3514, 72898), (3556, 72037), (4018, 63754), (5207, 49196), (6223, 41164), (7028, 36449), (8036, 31877), (10291, 24892), (10414, 24598), (12299, 20828), (12446, 20582)]