215317515

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{4013}}^1$

素因数の和:4108

約数の個数: 48

約数和(自身を含む): 406345248

約数和(自身を除く): 191027733

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 73, 105, 147, 219, 245, 365, 511, 735, 1095, 1533, 2555, 3577, 4013, 7665, 10731, 12039, 17885, 20065, 28091, 53655, 60195, 84273, 140455, 196637, 292949, 421365, 589911, 878847, 983185, 1464745, 2050643, 2949555, 4394235, 6151929, 10253215, 14354501, 30759645, 43063503, 71772505, 215317515]

約数ペア:

[(1, 215317515), (3, 71772505), (5, 43063503), (7, 30759645), (15, 14354501), (21, 10253215), (35, 6151929), (49, 4394235), (73, 2949555), (105, 2050643), (147, 1464745), (219, 983185), (245, 878847), (365, 589911), (511, 421365), (735, 292949), (1095, 196637), (1533, 140455), (2555, 84273), (3577, 60195), (4013, 53655), (7665, 28091), (10731, 20065), (12039, 17885)]