320420475

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{20639}}^1$

素因数の和:20681

約数の個数: 48

約数和(自身を含む): 614246400

約数和(自身を除く): 293825925

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 135, 207, 225, 345, 575, 621, 675, 1035, 1725, 3105, 5175, 15525, 20639, 61917, 103195, 185751, 309585, 474697, 515975, 557253, 928755, 1424091, 1547925, 2373485, 2786265, 4272273, 4643775, 7120455, 11867425, 12816819, 13931325, 21361365, 35602275, 64084095, 106806825, 320420475]

約数ペア:

[(1, 320420475), (3, 106806825), (5, 64084095), (9, 35602275), (15, 21361365), (23, 13931325), (25, 12816819), (27, 11867425), (45, 7120455), (69, 4643775), (75, 4272273), (115, 2786265), (135, 2373485), (207, 1547925), (225, 1424091), (345, 928755), (575, 557253), (621, 515975), (675, 474697), (1035, 309585), (1725, 185751), (3105, 103195), (5175, 61917), (15525, 20639)]