80452840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:539

約数の個数: 128

約数和(自身を含む): 217728000

約数和(自身を除く): 137275160

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 19, 20, 26, 34, 38, 40, 52, 65, 68, 76, 85, 95, 104, 130, 136, 152, 170, 190, 221, 247, 260, 323, 340, 380, 442, 479, 494, 520, 646, 680, 760, 884, 958, 988, 1105, 1235, 1292, 1615, 1768, 1916, 1976, 2210, 2395, 2470, 2584, 3230, 3832, 4199, 4420, 4790, 4940, 6227, 6460, 8143, 8398, 8840, 9101, 9580, 9880, 12454, 12920, 16286, 16796, 18202, 19160, 20995, 24908, 31135, 32572, 33592, 36404, 40715, 41990, 45505, 49816, 62270, 65144, 72808, 81430, 83980, 91010, 105859, 118313, 124540, 154717, 162860, 167960, 182020, 211718, 236626, 249080, 309434, 325720, 364040, 423436, 473252, 529295, 591565, 618868, 773585, 846872, 946504, 1058590, 1183130, 1237736, 1547170, 2011321, 2117180, 2366260, 3094340, 4022642, 4234360, 4732520, 6188680, 8045284, 10056605, 16090568, 20113210, 40226420, 80452840]

約数ペア:

[(1, 80452840), (2, 40226420), (4, 20113210), (5, 16090568), (8, 10056605), (10, 8045284), (13, 6188680), (17, 4732520), (19, 4234360), (20, 4022642), (26, 3094340), (34, 2366260), (38, 2117180), (40, 2011321), (52, 1547170), (65, 1237736), (68, 1183130), (76, 1058590), (85, 946504), (95, 846872), (104, 773585), (130, 618868), (136, 591565), (152, 529295), (170, 473252), (190, 423436), (221, 364040), (247, 325720), (260, 309434), (323, 249080), (340, 236626), (380, 211718), (442, 182020), (479, 167960), (494, 162860), (520, 154717), (646, 124540), (680, 118313), (760, 105859), (884, 91010), (958, 83980), (988, 81430), (1105, 72808), (1235, 65144), (1292, 62270), (1615, 49816), (1768, 45505), (1916, 41990), (1976, 40715), (2210, 36404), (2395, 33592), (2470, 32572), (2584, 31135), (3230, 24908), (3832, 20995), (4199, 19160), (4420, 18202), (4790, 16796), (4940, 16286), (6227, 12920), (6460, 12454), (8143, 9880), (8398, 9580), (8840, 9101)]