81460480

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2767}}^1$

素因数の和:2811

約数の個数: 72

約数和(自身を含む): 203680512

約数和(自身を除く): 122220032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 256, 320, 368, 460, 640, 736, 920, 1280, 1472, 1840, 2767, 2944, 3680, 5534, 5888, 7360, 11068, 13835, 14720, 22136, 27670, 29440, 44272, 55340, 63641, 88544, 110680, 127282, 177088, 221360, 254564, 318205, 354176, 442720, 509128, 636410, 708352, 885440, 1018256, 1272820, 1770880, 2036512, 2545640, 3541760, 4073024, 5091280, 8146048, 10182560, 16292096, 20365120, 40730240, 81460480]

約数ペア:

[(1, 81460480), (2, 40730240), (4, 20365120), (5, 16292096), (8, 10182560), (10, 8146048), (16, 5091280), (20, 4073024), (23, 3541760), (32, 2545640), (40, 2036512), (46, 1770880), (64, 1272820), (80, 1018256), (92, 885440), (115, 708352), (128, 636410), (160, 509128), (184, 442720), (230, 354176), (256, 318205), (320, 254564), (368, 221360), (460, 177088), (640, 127282), (736, 110680), (920, 88544), (1280, 63641), (1472, 55340), (1840, 44272), (2767, 29440), (2944, 27670), (3680, 22136), (5534, 14720), (5888, 13835), (7360, 11068)]