19513515

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{191}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 17258325

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 139, 147, 191, 245, 417, 573, 695, 735, 955, 973, 1337, 2085, 2865, 2919, 4011, 4865, 6685, 6811, 9359, 14595, 20055, 20433, 26549, 28077, 34055, 46795, 79647, 102165, 132745, 140385, 185843, 398235, 557529, 929215, 1300901, 2787645, 3902703, 6504505, 19513515]

約数ペア:

[(1, 19513515), (3, 6504505), (5, 3902703), (7, 2787645), (15, 1300901), (21, 929215), (35, 557529), (49, 398235), (105, 185843), (139, 140385), (147, 132745), (191, 102165), (245, 79647), (417, 46795), (573, 34055), (695, 28077), (735, 26549), (955, 20433), (973, 20055), (1337, 14595), (2085, 9359), (2865, 6811), (2919, 6685), (4011, 4865)]