20121855440

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{653}}^1\times {\mathrm{16747}}^1$

素因数の和:17436

約数の個数: 80

約数和(自身を含む): 48895049088

約数和(自身を除く): 28773193648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 653, 920, 1306, 1840, 2612, 3265, 5224, 6530, 10448, 13060, 15019, 16747, 26120, 30038, 33494, 52240, 60076, 66988, 75095, 83735, 120152, 133976, 150190, 167470, 240304, 267952, 300380, 334940, 385181, 600760, 669880, 770362, 1201520, 1339760, 1540724, 1925905, 3081448, 3851810, 6162896, 7703620, 10935791, 15407240, 21871582, 30814480, 43743164, 54678955, 87486328, 109357910, 174972656, 218715820, 251523193, 437431640, 503046386, 874863280, 1006092772, 1257615965, 2012185544, 2515231930, 4024371088, 5030463860, 10060927720, 20121855440]

約数ペア:

[(1, 20121855440), (2, 10060927720), (4, 5030463860), (5, 4024371088), (8, 2515231930), (10, 2012185544), (16, 1257615965), (20, 1006092772), (23, 874863280), (40, 503046386), (46, 437431640), (80, 251523193), (92, 218715820), (115, 174972656), (184, 109357910), (230, 87486328), (368, 54678955), (460, 43743164), (653, 30814480), (920, 21871582), (1306, 15407240), (1840, 10935791), (2612, 7703620), (3265, 6162896), (5224, 3851810), (6530, 3081448), (10448, 1925905), (13060, 1540724), (15019, 1339760), (16747, 1201520), (26120, 770362), (30038, 669880), (33494, 600760), (52240, 385181), (60076, 334940), (66988, 300380), (75095, 267952), (83735, 240304), (120152, 167470), (133976, 150190)]