21020370

素因数分解:

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

素因数の和:719

約数の個数: 64

約数和(自身を含む): 58060800

約数和(自身を除く): 37040430

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 199, 210, 398, 503, 597, 995, 1006, 1194, 1393, 1509, 1990, 2515, 2786, 2985, 3018, 3521, 4179, 5030, 5970, 6965, 7042, 7545, 8358, 10563, 13930, 15090, 17605, 20895, 21126, 35210, 41790, 52815, 100097, 105630, 200194, 300291, 500485, 600582, 700679, 1000970, 1401358, 1501455, 2102037, 3002910, 3503395, 4204074, 7006790, 10510185, 21020370]

約数ペア:

[(1, 21020370), (2, 10510185), (3, 7006790), (5, 4204074), (6, 3503395), (7, 3002910), (10, 2102037), (14, 1501455), (15, 1401358), (21, 1000970), (30, 700679), (35, 600582), (42, 500485), (70, 300291), (105, 200194), (199, 105630), (210, 100097), (398, 52815), (503, 41790), (597, 35210), (995, 21126), (1006, 20895), (1194, 17605), (1393, 15090), (1509, 13930), (1990, 10563), (2515, 8358), (2786, 7545), (2985, 7042), (3018, 6965), (3521, 5970), (4179, 5030)]