19516831490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1571}}^1\times {\mathrm{7351}}^1$

素因数の和:8955

約数の個数: 48

約数和(自身を含む): 38069891136

約数和(自身を除く): 18553059646

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1571, 1690, 3142, 7351, 7855, 14702, 15710, 20423, 36755, 40846, 73510, 95563, 102115, 191126, 204230, 265499, 477815, 530998, 955630, 1242319, 1327495, 2484638, 2654990, 6211595, 11548421, 12423190, 23096842, 57742105, 115484210, 150129473, 300258946, 750647365, 1501294730, 1951683149, 3903366298, 9758415745, 19516831490]

約数ペア:

[(1, 19516831490), (2, 9758415745), (5, 3903366298), (10, 1951683149), (13, 1501294730), (26, 750647365), (65, 300258946), (130, 150129473), (169, 115484210), (338, 57742105), (845, 23096842), (1571, 12423190), (1690, 11548421), (3142, 6211595), (7351, 2654990), (7855, 2484638), (14702, 1327495), (15710, 1242319), (20423, 955630), (36755, 530998), (40846, 477815), (73510, 265499), (95563, 204230), (102115, 191126)]