256723168

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{1283}}^1$

素因数の和:1356

約数の個数: 72

約数和(自身を含む): 562522968

約数和(自身を除く): 305799800

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 74, 104, 148, 169, 208, 296, 338, 416, 481, 592, 676, 962, 1184, 1283, 1352, 1924, 2566, 2704, 3848, 5132, 5408, 6253, 7696, 10264, 12506, 15392, 16679, 20528, 25012, 33358, 41056, 47471, 50024, 66716, 94942, 100048, 133432, 189884, 200096, 216827, 266864, 379768, 433654, 533728, 617123, 759536, 867308, 1234246, 1519072, 1734616, 2468492, 3469232, 4936984, 6938464, 8022599, 9873968, 16045198, 19747936, 32090396, 64180792, 128361584, 256723168]

約数ペア:

[(1, 256723168), (2, 128361584), (4, 64180792), (8, 32090396), (13, 19747936), (16, 16045198), (26, 9873968), (32, 8022599), (37, 6938464), (52, 4936984), (74, 3469232), (104, 2468492), (148, 1734616), (169, 1519072), (208, 1234246), (296, 867308), (338, 759536), (416, 617123), (481, 533728), (592, 433654), (676, 379768), (962, 266864), (1184, 216827), (1283, 200096), (1352, 189884), (1924, 133432), (2566, 100048), (2704, 94942), (3848, 66716), (5132, 50024), (5408, 47471), (6253, 41056), (7696, 33358), (10264, 25012), (12506, 20528), (15392, 16679)]