21007863500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3231979}}^1$

素因数の和:3232011

約数の個数: 48

約数和(自身を含む): 49410510240

約数和(自身を除く): 28402646740

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 6500, 3231979, 6463958, 12927916, 16159895, 32319790, 42015727, 64639580, 80799475, 84031454, 161598950, 168062908, 210078635, 323197900, 403997375, 420157270, 807994750, 840314540, 1050393175, 1615989500, 2100786350, 4201572700, 5251965875, 10503931750, 21007863500]

約数ペア:

[(1, 21007863500), (2, 10503931750), (4, 5251965875), (5, 4201572700), (10, 2100786350), (13, 1615989500), (20, 1050393175), (25, 840314540), (26, 807994750), (50, 420157270), (52, 403997375), (65, 323197900), (100, 210078635), (125, 168062908), (130, 161598950), (250, 84031454), (260, 80799475), (325, 64639580), (500, 42015727), (650, 32319790), (1300, 16159895), (1625, 12927916), (3250, 6463958), (6500, 3231979)]