19970820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1193}}^1$

素因数の和:1242

約数の個数: 96

約数和(自身を含む): 64189440

約数和(自身を除く): 44218620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 45, 54, 60, 62, 90, 93, 108, 124, 135, 155, 180, 186, 270, 279, 310, 372, 465, 540, 558, 620, 837, 930, 1116, 1193, 1395, 1674, 1860, 2386, 2790, 3348, 3579, 4185, 4772, 5580, 5965, 7158, 8370, 10737, 11930, 14316, 16740, 17895, 21474, 23860, 32211, 35790, 36983, 42948, 53685, 64422, 71580, 73966, 107370, 110949, 128844, 147932, 161055, 184915, 214740, 221898, 322110, 332847, 369830, 443796, 554745, 644220, 665694, 739660, 998541, 1109490, 1331388, 1664235, 1997082, 2218980, 3328470, 3994164, 4992705, 6656940, 9985410, 19970820]

約数ペア:

[(1, 19970820), (2, 9985410), (3, 6656940), (4, 4992705), (5, 3994164), (6, 3328470), (9, 2218980), (10, 1997082), (12, 1664235), (15, 1331388), (18, 1109490), (20, 998541), (27, 739660), (30, 665694), (31, 644220), (36, 554745), (45, 443796), (54, 369830), (60, 332847), (62, 322110), (90, 221898), (93, 214740), (108, 184915), (124, 161055), (135, 147932), (155, 128844), (180, 110949), (186, 107370), (270, 73966), (279, 71580), (310, 64422), (372, 53685), (465, 42948), (540, 36983), (558, 35790), (620, 32211), (837, 23860), (930, 21474), (1116, 17895), (1193, 16740), (1395, 14316), (1674, 11930), (1860, 10737), (2386, 8370), (2790, 7158), (3348, 5965), (3579, 5580), (4185, 4772)]