30821120

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^2\times {\mathrm{199}}^1$

素因数の和:242

約数の個数: 108

約数和(自身を含む): 81555600

約数和(自身を除く): 50734480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 128, 160, 176, 199, 220, 242, 256, 320, 352, 398, 440, 484, 605, 640, 704, 796, 880, 968, 995, 1210, 1280, 1408, 1592, 1760, 1936, 1990, 2189, 2420, 2816, 3184, 3520, 3872, 3980, 4378, 4840, 6368, 7040, 7744, 7960, 8756, 9680, 10945, 12736, 14080, 15488, 15920, 17512, 19360, 21890, 24079, 25472, 30976, 31840, 35024, 38720, 43780, 48158, 50944, 63680, 70048, 77440, 87560, 96316, 120395, 127360, 140096, 154880, 175120, 192632, 240790, 254720, 280192, 350240, 385264, 481580, 560384, 700480, 770528, 963160, 1400960, 1541056, 1926320, 2801920, 3082112, 3852640, 6164224, 7705280, 15410560, 30821120]

約数ペア:

[(1, 30821120), (2, 15410560), (4, 7705280), (5, 6164224), (8, 3852640), (10, 3082112), (11, 2801920), (16, 1926320), (20, 1541056), (22, 1400960), (32, 963160), (40, 770528), (44, 700480), (55, 560384), (64, 481580), (80, 385264), (88, 350240), (110, 280192), (121, 254720), (128, 240790), (160, 192632), (176, 175120), (199, 154880), (220, 140096), (242, 127360), (256, 120395), (320, 96316), (352, 87560), (398, 77440), (440, 70048), (484, 63680), (605, 50944), (640, 48158), (704, 43780), (796, 38720), (880, 35024), (968, 31840), (995, 30976), (1210, 25472), (1280, 24079), (1408, 21890), (1592, 19360), (1760, 17512), (1936, 15920), (1990, 15488), (2189, 14080), (2420, 12736), (2816, 10945), (3184, 9680), (3520, 8756), (3872, 7960), (3980, 7744), (4378, 7040), (4840, 6368)]