19711120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1723}}^1$

素因数の和:1760

約数の個数: 80

約数和(自身を含む): 53871552

約数和(自身を除く): 34160432

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 1723, 2288, 2860, 3446, 5720, 6892, 8615, 11440, 13784, 17230, 18953, 22399, 27568, 34460, 37906, 44798, 68920, 75812, 89596, 94765, 111995, 137840, 151624, 179192, 189530, 223990, 246389, 303248, 358384, 379060, 447980, 492778, 758120, 895960, 985556, 1231945, 1516240, 1791920, 1971112, 2463890, 3942224, 4927780, 9855560, 19711120]

約数ペア:

[(1, 19711120), (2, 9855560), (4, 4927780), (5, 3942224), (8, 2463890), (10, 1971112), (11, 1791920), (13, 1516240), (16, 1231945), (20, 985556), (22, 895960), (26, 758120), (40, 492778), (44, 447980), (52, 379060), (55, 358384), (65, 303248), (80, 246389), (88, 223990), (104, 189530), (110, 179192), (130, 151624), (143, 137840), (176, 111995), (208, 94765), (220, 89596), (260, 75812), (286, 68920), (440, 44798), (520, 37906), (572, 34460), (715, 27568), (880, 22399), (1040, 18953), (1144, 17230), (1430, 13784), (1723, 11440), (2288, 8615), (2860, 6892), (3446, 5720)]