2800850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:195

約数の個数: 48

約数和(自身を含む): 5832960

約数和(自身を除く): 3032110

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 139, 155, 278, 310, 325, 403, 650, 695, 775, 806, 1390, 1550, 1807, 2015, 3475, 3614, 4030, 4309, 6950, 8618, 9035, 10075, 18070, 20150, 21545, 43090, 45175, 56017, 90350, 107725, 112034, 215450, 280085, 560170, 1400425, 2800850]

約数ペア:

[(1, 2800850), (2, 1400425), (5, 560170), (10, 280085), (13, 215450), (25, 112034), (26, 107725), (31, 90350), (50, 56017), (62, 45175), (65, 43090), (130, 21545), (139, 20150), (155, 18070), (278, 10075), (310, 9035), (325, 8618), (403, 6950), (650, 4309), (695, 4030), (775, 3614), (806, 3475), (1390, 2015), (1550, 1807)]