16666880

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{449}}^1$

素因数の和:499

約数の個数: 72

約数和(自身を含む): 41391000

約数和(自身を除く): 24724120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 290, 320, 449, 464, 580, 640, 898, 928, 1160, 1280, 1796, 1856, 2245, 2320, 3592, 3712, 4490, 4640, 7184, 7424, 8980, 9280, 13021, 14368, 17960, 18560, 26042, 28736, 35920, 37120, 52084, 57472, 65105, 71840, 104168, 114944, 130210, 143680, 208336, 260420, 287360, 416672, 520840, 574720, 833344, 1041680, 1666688, 2083360, 3333376, 4166720, 8333440, 16666880]

約数ペア:

[(1, 16666880), (2, 8333440), (4, 4166720), (5, 3333376), (8, 2083360), (10, 1666688), (16, 1041680), (20, 833344), (29, 574720), (32, 520840), (40, 416672), (58, 287360), (64, 260420), (80, 208336), (116, 143680), (128, 130210), (145, 114944), (160, 104168), (232, 71840), (256, 65105), (290, 57472), (320, 52084), (449, 37120), (464, 35920), (580, 28736), (640, 26042), (898, 18560), (928, 17960), (1160, 14368), (1280, 13021), (1796, 9280), (1856, 8980), (2245, 7424), (2320, 7184), (3592, 4640), (3712, 4490)]