28027160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{503}}^1$

素因数の和:720

約数の個数: 64

約数和(自身を含む): 72576000

約数和(自身を除く): 44548840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 199, 280, 398, 503, 796, 995, 1006, 1393, 1592, 1990, 2012, 2515, 2786, 3521, 3980, 4024, 5030, 5572, 6965, 7042, 7960, 10060, 11144, 13930, 14084, 17605, 20120, 27860, 28168, 35210, 55720, 70420, 100097, 140840, 200194, 400388, 500485, 700679, 800776, 1000970, 1401358, 2001940, 2802716, 3503395, 4003880, 5605432, 7006790, 14013580, 28027160]

約数ペア:

[(1, 28027160), (2, 14013580), (4, 7006790), (5, 5605432), (7, 4003880), (8, 3503395), (10, 2802716), (14, 2001940), (20, 1401358), (28, 1000970), (35, 800776), (40, 700679), (56, 500485), (70, 400388), (140, 200194), (199, 140840), (280, 100097), (398, 70420), (503, 55720), (796, 35210), (995, 28168), (1006, 27860), (1393, 20120), (1592, 17605), (1990, 14084), (2012, 13930), (2515, 11144), (2786, 10060), (3521, 7960), (3980, 7042), (4024, 6965), (5030, 5572)]