28871440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:137

約数の個数: 160

約数和(自身を含む): 80994816

約数和(自身を除く): 52123376

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 23, 26, 34, 40, 46, 52, 65, 68, 71, 80, 85, 92, 104, 115, 130, 136, 142, 170, 184, 208, 221, 230, 260, 272, 284, 299, 340, 355, 368, 391, 442, 460, 520, 568, 598, 680, 710, 782, 884, 920, 923, 1040, 1105, 1136, 1196, 1207, 1360, 1420, 1495, 1564, 1633, 1768, 1840, 1846, 1955, 2210, 2392, 2414, 2840, 2990, 3128, 3266, 3536, 3692, 3910, 4420, 4615, 4784, 4828, 5083, 5680, 5980, 6035, 6256, 6532, 7384, 7820, 8165, 8840, 9230, 9656, 10166, 11960, 12070, 13064, 14768, 15640, 15691, 16330, 17680, 18460, 19312, 20332, 21229, 23920, 24140, 25415, 26128, 27761, 31280, 31382, 32660, 36920, 40664, 42458, 48280, 50830, 55522, 62764, 65320, 73840, 78455, 81328, 84916, 96560, 101660, 106145, 111044, 125528, 130640, 138805, 156910, 169832, 203320, 212290, 222088, 251056, 277610, 313820, 339664, 360893, 406640, 424580, 444176, 555220, 627640, 721786, 849160, 1110440, 1255280, 1443572, 1698320, 1804465, 2220880, 2887144, 3608930, 5774288, 7217860, 14435720, 28871440]

約数ペア:

[(1, 28871440), (2, 14435720), (4, 7217860), (5, 5774288), (8, 3608930), (10, 2887144), (13, 2220880), (16, 1804465), (17, 1698320), (20, 1443572), (23, 1255280), (26, 1110440), (34, 849160), (40, 721786), (46, 627640), (52, 555220), (65, 444176), (68, 424580), (71, 406640), (80, 360893), (85, 339664), (92, 313820), (104, 277610), (115, 251056), (130, 222088), (136, 212290), (142, 203320), (170, 169832), (184, 156910), (208, 138805), (221, 130640), (230, 125528), (260, 111044), (272, 106145), (284, 101660), (299, 96560), (340, 84916), (355, 81328), (368, 78455), (391, 73840), (442, 65320), (460, 62764), (520, 55522), (568, 50830), (598, 48280), (680, 42458), (710, 40664), (782, 36920), (884, 32660), (920, 31382), (923, 31280), (1040, 27761), (1105, 26128), (1136, 25415), (1196, 24140), (1207, 23920), (1360, 21229), (1420, 20332), (1495, 19312), (1564, 18460), (1633, 17680), (1768, 16330), (1840, 15691), (1846, 15640), (1955, 14768), (2210, 13064), (2392, 12070), (2414, 11960), (2840, 10166), (2990, 9656), (3128, 9230), (3266, 8840), (3536, 8165), (3692, 7820), (3910, 7384), (4420, 6532), (4615, 6256), (4784, 6035), (4828, 5980), (5083, 5680)]