21408100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{257}}^1$

素因数の和:302

約数の個数: 108

約数和(自身を含む): 57441636

約数和(自身を除く): 36033536

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 25, 28, 34, 35, 49, 50, 68, 70, 85, 98, 100, 119, 140, 170, 175, 196, 238, 245, 257, 340, 350, 425, 476, 490, 514, 595, 700, 833, 850, 980, 1028, 1190, 1225, 1285, 1666, 1700, 1799, 2380, 2450, 2570, 2975, 3332, 3598, 4165, 4369, 4900, 5140, 5950, 6425, 7196, 8330, 8738, 8995, 11900, 12593, 12850, 16660, 17476, 17990, 20825, 21845, 25186, 25700, 30583, 35980, 41650, 43690, 44975, 50372, 61166, 62965, 83300, 87380, 89950, 109225, 122332, 125930, 152915, 179900, 214081, 218450, 251860, 305830, 314825, 428162, 436900, 611660, 629650, 764575, 856324, 1070405, 1259300, 1529150, 2140810, 3058300, 4281620, 5352025, 10704050, 21408100]

約数ペア:

[(1, 21408100), (2, 10704050), (4, 5352025), (5, 4281620), (7, 3058300), (10, 2140810), (14, 1529150), (17, 1259300), (20, 1070405), (25, 856324), (28, 764575), (34, 629650), (35, 611660), (49, 436900), (50, 428162), (68, 314825), (70, 305830), (85, 251860), (98, 218450), (100, 214081), (119, 179900), (140, 152915), (170, 125930), (175, 122332), (196, 109225), (238, 89950), (245, 87380), (257, 83300), (340, 62965), (350, 61166), (425, 50372), (476, 44975), (490, 43690), (514, 41650), (595, 35980), (700, 30583), (833, 25700), (850, 25186), (980, 21845), (1028, 20825), (1190, 17990), (1225, 17476), (1285, 16660), (1666, 12850), (1700, 12593), (1799, 11900), (2380, 8995), (2450, 8738), (2570, 8330), (2975, 7196), (3332, 6425), (3598, 5950), (4165, 5140), (4369, 4900)]