129809720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61231}}^1$

素因数の和:61295

約数の個数: 32

約数和(自身を含む): 297587520

約数和(自身を除く): 167777800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 61231, 122462, 244924, 306155, 489848, 612310, 1224620, 2449240, 3245243, 6490486, 12980972, 16226215, 25961944, 32452430, 64904860, 129809720]

約数ペア:

[(1, 129809720), (2, 64904860), (4, 32452430), (5, 25961944), (8, 16226215), (10, 12980972), (20, 6490486), (40, 3245243), (53, 2449240), (106, 1224620), (212, 612310), (265, 489848), (424, 306155), (530, 244924), (1060, 122462), (2120, 61231)]