213226520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{433}}^1\times {\mathrm{947}}^1$

素因数の和:1404

約数の個数: 64

約数和(自身を含む): 518404320

約数和(自身を除く): 305177800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 433, 520, 866, 947, 1732, 1894, 2165, 3464, 3788, 4330, 4735, 5629, 7576, 8660, 9470, 11258, 12311, 17320, 18940, 22516, 24622, 28145, 37880, 45032, 49244, 56290, 61555, 98488, 112580, 123110, 225160, 246220, 410051, 492440, 820102, 1640204, 2050255, 3280408, 4100510, 5330663, 8201020, 10661326, 16402040, 21322652, 26653315, 42645304, 53306630, 106613260, 213226520]

約数ペア:

[(1, 213226520), (2, 106613260), (4, 53306630), (5, 42645304), (8, 26653315), (10, 21322652), (13, 16402040), (20, 10661326), (26, 8201020), (40, 5330663), (52, 4100510), (65, 3280408), (104, 2050255), (130, 1640204), (260, 820102), (433, 492440), (520, 410051), (866, 246220), (947, 225160), (1732, 123110), (1894, 112580), (2165, 98488), (3464, 61555), (3788, 56290), (4330, 49244), (4735, 45032), (5629, 37880), (7576, 28145), (8660, 24622), (9470, 22516), (11258, 18940), (12311, 17320)]