21284025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 40854528

約数和(自身を除く): 19570503

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 71, 75, 105, 175, 213, 355, 497, 525, 571, 1065, 1491, 1713, 1775, 2485, 2855, 3997, 5325, 7455, 8565, 11991, 12425, 14275, 19985, 37275, 40541, 42825, 59955, 99925, 121623, 202705, 283787, 299775, 608115, 851361, 1013525, 1418935, 3040575, 4256805, 7094675, 21284025]

約数ペア:

[(1, 21284025), (3, 7094675), (5, 4256805), (7, 3040575), (15, 1418935), (21, 1013525), (25, 851361), (35, 608115), (71, 299775), (75, 283787), (105, 202705), (175, 121623), (213, 99925), (355, 59955), (497, 42825), (525, 40541), (571, 37275), (1065, 19985), (1491, 14275), (1713, 12425), (1775, 11991), (2485, 8565), (2855, 7455), (3997, 5325)]