65278720

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3923}}^1$

素因数の和:3957

約数の個数: 72

約数和(自身を含む): 168433776

約数和(自身を除く): 103155056

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 3923, 4160, 7846, 8320, 15692, 16640, 19615, 31384, 39230, 50999, 62768, 78460, 101998, 125536, 156920, 203996, 251072, 254995, 313840, 407992, 502144, 509990, 627680, 815984, 1004288, 1019980, 1255360, 1631968, 2039960, 2510720, 3263936, 4079920, 5021440, 6527872, 8159840, 13055744, 16319680, 32639360, 65278720]

約数ペア:

[(1, 65278720), (2, 32639360), (4, 16319680), (5, 13055744), (8, 8159840), (10, 6527872), (13, 5021440), (16, 4079920), (20, 3263936), (26, 2510720), (32, 2039960), (40, 1631968), (52, 1255360), (64, 1019980), (65, 1004288), (80, 815984), (104, 627680), (128, 509990), (130, 502144), (160, 407992), (208, 313840), (256, 254995), (260, 251072), (320, 203996), (416, 156920), (520, 125536), (640, 101998), (832, 78460), (1040, 62768), (1280, 50999), (1664, 39230), (2080, 31384), (3328, 19615), (3923, 16640), (4160, 15692), (7846, 8320)]