17920728

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:118

約数の個数: 144

約数和(自身を含む): 58865040

約数和(自身を除く): 40944312

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 31, 36, 37, 42, 56, 62, 63, 72, 74, 84, 93, 111, 124, 126, 148, 168, 186, 217, 222, 248, 252, 259, 279, 296, 333, 372, 434, 444, 504, 518, 558, 651, 666, 744, 777, 868, 888, 961, 1036, 1116, 1147, 1302, 1332, 1554, 1736, 1922, 1953, 2072, 2232, 2294, 2331, 2604, 2664, 2883, 3108, 3441, 3844, 3906, 4588, 4662, 5208, 5766, 6216, 6727, 6882, 7688, 7812, 8029, 8649, 9176, 9324, 10323, 11532, 13454, 13764, 15624, 16058, 17298, 18648, 20181, 20646, 23064, 24087, 26908, 27528, 32116, 34596, 35557, 40362, 41292, 48174, 53816, 60543, 64232, 69192, 71114, 72261, 80724, 82584, 96348, 106671, 121086, 142228, 144522, 161448, 192696, 213342, 242172, 248899, 284456, 289044, 320013, 426684, 484344, 497798, 578088, 640026, 746697, 853368, 995596, 1280052, 1493394, 1991192, 2240091, 2560104, 2986788, 4480182, 5973576, 8960364, 17920728]

約数ペア:

[(1, 17920728), (2, 8960364), (3, 5973576), (4, 4480182), (6, 2986788), (7, 2560104), (8, 2240091), (9, 1991192), (12, 1493394), (14, 1280052), (18, 995596), (21, 853368), (24, 746697), (28, 640026), (31, 578088), (36, 497798), (37, 484344), (42, 426684), (56, 320013), (62, 289044), (63, 284456), (72, 248899), (74, 242172), (84, 213342), (93, 192696), (111, 161448), (124, 144522), (126, 142228), (148, 121086), (168, 106671), (186, 96348), (217, 82584), (222, 80724), (248, 72261), (252, 71114), (259, 69192), (279, 64232), (296, 60543), (333, 53816), (372, 48174), (434, 41292), (444, 40362), (504, 35557), (518, 34596), (558, 32116), (651, 27528), (666, 26908), (744, 24087), (777, 23064), (868, 20646), (888, 20181), (961, 18648), (1036, 17298), (1116, 16058), (1147, 15624), (1302, 13764), (1332, 13454), (1554, 11532), (1736, 10323), (1922, 9324), (1953, 9176), (2072, 8649), (2232, 8029), (2294, 7812), (2331, 7688), (2604, 6882), (2664, 6727), (2883, 6216), (3108, 5766), (3441, 5208), (3844, 4662), (3906, 4588)]