21927280

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{701}}^1$

素因数の和:754

約数の個数: 80

約数和(自身を含む): 56407104

約数和(自身を除く): 34479824

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 680, 701, 782, 920, 1360, 1402, 1564, 1840, 1955, 2804, 3128, 3505, 3910, 5608, 6256, 7010, 7820, 11216, 11917, 14020, 15640, 16123, 23834, 28040, 31280, 32246, 47668, 56080, 59585, 64492, 80615, 95336, 119170, 128984, 161230, 190672, 238340, 257968, 274091, 322460, 476680, 548182, 644920, 953360, 1096364, 1289840, 1370455, 2192728, 2740910, 4385456, 5481820, 10963640, 21927280]

約数ペア:

[(1, 21927280), (2, 10963640), (4, 5481820), (5, 4385456), (8, 2740910), (10, 2192728), (16, 1370455), (17, 1289840), (20, 1096364), (23, 953360), (34, 644920), (40, 548182), (46, 476680), (68, 322460), (80, 274091), (85, 257968), (92, 238340), (115, 190672), (136, 161230), (170, 128984), (184, 119170), (230, 95336), (272, 80615), (340, 64492), (368, 59585), (391, 56080), (460, 47668), (680, 32246), (701, 31280), (782, 28040), (920, 23834), (1360, 16123), (1402, 15640), (1564, 14020), (1840, 11917), (1955, 11216), (2804, 7820), (3128, 7010), (3505, 6256), (3910, 5608)]