81876620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{2447}}^1$

素因数の和:2702

約数の個数: 48

約数和(自身を含む): 197406720

約数和(自身を除く): 115530100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 956, 1195, 1673, 2390, 2447, 3346, 4780, 4894, 6692, 8365, 9788, 12235, 16730, 17129, 24470, 33460, 34258, 48940, 68516, 85645, 171290, 342580, 584833, 1169666, 2339332, 2924165, 4093831, 5848330, 8187662, 11696660, 16375324, 20469155, 40938310, 81876620]

約数ペア:

[(1, 81876620), (2, 40938310), (4, 20469155), (5, 16375324), (7, 11696660), (10, 8187662), (14, 5848330), (20, 4093831), (28, 2924165), (35, 2339332), (70, 1169666), (140, 584833), (239, 342580), (478, 171290), (956, 85645), (1195, 68516), (1673, 48940), (2390, 34258), (2447, 33460), (3346, 24470), (4780, 17129), (4894, 16730), (6692, 12235), (8365, 9788)]