20104309720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{133993}}^1$

素因数の和:134057

約数の個数: 96

約数和(自身を含む): 51325061760

約数和(自身を除く): 31220752040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 121, 124, 155, 220, 242, 248, 310, 341, 440, 484, 605, 620, 682, 968, 1210, 1240, 1364, 1705, 2420, 2728, 3410, 3751, 4840, 6820, 7502, 13640, 15004, 18755, 30008, 37510, 75020, 133993, 150040, 267986, 535972, 669965, 1071944, 1339930, 1473923, 2679860, 2947846, 4153783, 5359720, 5895692, 7369615, 8307566, 11791384, 14739230, 16213153, 16615132, 20768915, 29478460, 32426306, 33230264, 41537830, 45691613, 58956920, 64852612, 81065765, 83075660, 91383226, 129705224, 162131530, 166151320, 182766452, 228458065, 324263060, 365532904, 456916130, 502607743, 648526120, 913832260, 1005215486, 1827664520, 2010430972, 2513038715, 4020861944, 5026077430, 10052154860, 20104309720]

約数ペア:

[(1, 20104309720), (2, 10052154860), (4, 5026077430), (5, 4020861944), (8, 2513038715), (10, 2010430972), (11, 1827664520), (20, 1005215486), (22, 913832260), (31, 648526120), (40, 502607743), (44, 456916130), (55, 365532904), (62, 324263060), (88, 228458065), (110, 182766452), (121, 166151320), (124, 162131530), (155, 129705224), (220, 91383226), (242, 83075660), (248, 81065765), (310, 64852612), (341, 58956920), (440, 45691613), (484, 41537830), (605, 33230264), (620, 32426306), (682, 29478460), (968, 20768915), (1210, 16615132), (1240, 16213153), (1364, 14739230), (1705, 11791384), (2420, 8307566), (2728, 7369615), (3410, 5895692), (3751, 5359720), (4840, 4153783), (6820, 2947846), (7502, 2679860), (13640, 1473923), (15004, 1339930), (18755, 1071944), (30008, 669965), (37510, 535972), (75020, 267986), (133993, 150040)]