20944875

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 40734720

約数和(自身を除く): 19789845

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 79, 101, 105, 125, 175, 237, 303, 375, 395, 505, 525, 553, 707, 875, 1185, 1515, 1659, 1975, 2121, 2525, 2625, 2765, 3535, 5925, 7575, 7979, 8295, 9875, 10605, 12625, 13825, 17675, 23937, 29625, 37875, 39895, 41475, 53025, 55853, 69125, 88375, 119685, 167559, 199475, 207375, 265125, 279265, 598425, 837795, 997375, 1396325, 2992125, 4188975, 6981625, 20944875]

約数ペア:

[(1, 20944875), (3, 6981625), (5, 4188975), (7, 2992125), (15, 1396325), (21, 997375), (25, 837795), (35, 598425), (75, 279265), (79, 265125), (101, 207375), (105, 199475), (125, 167559), (175, 119685), (237, 88375), (303, 69125), (375, 55853), (395, 53025), (505, 41475), (525, 39895), (553, 37875), (707, 29625), (875, 23937), (1185, 17675), (1515, 13825), (1659, 12625), (1975, 10605), (2121, 9875), (2525, 8295), (2625, 7979), (2765, 7575), (3535, 5925)]