2101450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:139

約数の個数: 48

約数和(自身を含む): 4359096

約数和(自身を除く): 2257646

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 53, 61, 65, 106, 122, 130, 265, 305, 325, 530, 610, 650, 689, 793, 1325, 1378, 1525, 1586, 2650, 3050, 3233, 3445, 3965, 6466, 6890, 7930, 16165, 17225, 19825, 32330, 34450, 39650, 42029, 80825, 84058, 161650, 210145, 420290, 1050725, 2101450]

約数ペア:

[(1, 2101450), (2, 1050725), (5, 420290), (10, 210145), (13, 161650), (25, 84058), (26, 80825), (50, 42029), (53, 39650), (61, 34450), (65, 32330), (106, 19825), (122, 17225), (130, 16165), (265, 7930), (305, 6890), (325, 6466), (530, 3965), (610, 3445), (650, 3233), (689, 3050), (793, 2650), (1325, 1586), (1378, 1525)]