991121520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1\times {\mathrm{439}}^1$

素因数の和:887

約数の個数: 160

約数和(自身を含む): 3221222400

約数和(自身を除く): 2230100880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 409, 439, 460, 552, 690, 818, 878, 920, 1104, 1227, 1317, 1380, 1636, 1756, 1840, 2045, 2195, 2454, 2634, 2760, 3272, 3512, 4090, 4390, 4908, 5268, 5520, 6135, 6544, 6585, 7024, 8180, 8780, 9407, 9816, 10097, 10536, 12270, 13170, 16360, 17560, 18814, 19632, 20194, 21072, 24540, 26340, 28221, 30291, 32720, 35120, 37628, 40388, 47035, 49080, 50485, 52680, 56442, 60582, 75256, 80776, 94070, 98160, 100970, 105360, 112884, 121164, 141105, 150512, 151455, 161552, 179551, 188140, 201940, 225768, 242328, 282210, 302910, 359102, 376280, 403880, 451536, 484656, 538653, 564420, 605820, 718204, 752560, 807760, 897755, 1077306, 1128840, 1211640, 1436408, 1795510, 2154612, 2257680, 2423280, 2693265, 2872816, 3591020, 4129673, 4309224, 5386530, 7182040, 8259346, 8618448, 10773060, 12389019, 14364080, 16518692, 20648365, 21546120, 24778038, 33037384, 41296730, 43092240, 49556076, 61945095, 66074768, 82593460, 99112152, 123890190, 165186920, 198224304, 247780380, 330373840, 495560760, 991121520]

約数ペア:

[(1, 991121520), (2, 495560760), (3, 330373840), (4, 247780380), (5, 198224304), (6, 165186920), (8, 123890190), (10, 99112152), (12, 82593460), (15, 66074768), (16, 61945095), (20, 49556076), (23, 43092240), (24, 41296730), (30, 33037384), (40, 24778038), (46, 21546120), (48, 20648365), (60, 16518692), (69, 14364080), (80, 12389019), (92, 10773060), (115, 8618448), (120, 8259346), (138, 7182040), (184, 5386530), (230, 4309224), (240, 4129673), (276, 3591020), (345, 2872816), (368, 2693265), (409, 2423280), (439, 2257680), (460, 2154612), (552, 1795510), (690, 1436408), (818, 1211640), (878, 1128840), (920, 1077306), (1104, 897755), (1227, 807760), (1317, 752560), (1380, 718204), (1636, 605820), (1756, 564420), (1840, 538653), (2045, 484656), (2195, 451536), (2454, 403880), (2634, 376280), (2760, 359102), (3272, 302910), (3512, 282210), (4090, 242328), (4390, 225768), (4908, 201940), (5268, 188140), (5520, 179551), (6135, 161552), (6544, 151455), (6585, 150512), (7024, 141105), (8180, 121164), (8780, 112884), (9407, 105360), (9816, 100970), (10097, 98160), (10536, 94070), (12270, 80776), (13170, 75256), (16360, 60582), (17560, 56442), (18814, 52680), (19632, 50485), (20194, 49080), (21072, 47035), (24540, 40388), (26340, 37628), (28221, 35120), (30291, 32720)]