21549710

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:250

約数の個数: 96

約数和(自身を含む): 51710400

約数和(自身を除く): 30160690

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 26, 34, 35, 49, 65, 70, 85, 91, 98, 119, 130, 170, 182, 199, 221, 238, 245, 398, 442, 455, 490, 595, 637, 833, 910, 995, 1105, 1190, 1274, 1393, 1547, 1666, 1990, 2210, 2587, 2786, 3094, 3185, 3383, 4165, 5174, 6370, 6766, 6965, 7735, 8330, 9751, 10829, 12935, 13930, 15470, 16915, 18109, 19502, 21658, 23681, 25870, 33830, 36218, 43979, 47362, 48755, 54145, 87958, 90545, 97510, 108290, 118405, 126763, 165767, 181090, 219895, 236810, 253526, 307853, 331534, 439790, 615706, 633815, 828835, 1267630, 1539265, 1657670, 2154971, 3078530, 4309942, 10774855, 21549710]

約数ペア:

[(1, 21549710), (2, 10774855), (5, 4309942), (7, 3078530), (10, 2154971), (13, 1657670), (14, 1539265), (17, 1267630), (26, 828835), (34, 633815), (35, 615706), (49, 439790), (65, 331534), (70, 307853), (85, 253526), (91, 236810), (98, 219895), (119, 181090), (130, 165767), (170, 126763), (182, 118405), (199, 108290), (221, 97510), (238, 90545), (245, 87958), (398, 54145), (442, 48755), (455, 47362), (490, 43979), (595, 36218), (637, 33830), (833, 25870), (910, 23681), (995, 21658), (1105, 19502), (1190, 18109), (1274, 16915), (1393, 15470), (1547, 13930), (1666, 12935), (1990, 10829), (2210, 9751), (2587, 8330), (2786, 7735), (3094, 6965), (3185, 6766), (3383, 6370), (4165, 5174)]