20997660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{163}}^1$

素因数の和:307

約数の個数: 96

約数和(自身を含む): 62818560

約数和(自身を除く): 41820900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 113, 114, 163, 190, 226, 228, 285, 326, 339, 380, 452, 489, 565, 570, 652, 678, 815, 978, 1130, 1140, 1356, 1630, 1695, 1956, 2147, 2260, 2445, 3097, 3260, 3390, 4294, 4890, 6194, 6441, 6780, 8588, 9291, 9780, 10735, 12388, 12882, 15485, 18419, 18582, 21470, 25764, 30970, 32205, 36838, 37164, 42940, 46455, 55257, 61940, 64410, 73676, 92095, 92910, 110514, 128820, 184190, 185820, 221028, 276285, 349961, 368380, 552570, 699922, 1049883, 1105140, 1399844, 1749805, 2099766, 3499610, 4199532, 5249415, 6999220, 10498830, 20997660]

約数ペア:

[(1, 20997660), (2, 10498830), (3, 6999220), (4, 5249415), (5, 4199532), (6, 3499610), (10, 2099766), (12, 1749805), (15, 1399844), (19, 1105140), (20, 1049883), (30, 699922), (38, 552570), (57, 368380), (60, 349961), (76, 276285), (95, 221028), (113, 185820), (114, 184190), (163, 128820), (190, 110514), (226, 92910), (228, 92095), (285, 73676), (326, 64410), (339, 61940), (380, 55257), (452, 46455), (489, 42940), (565, 37164), (570, 36838), (652, 32205), (678, 30970), (815, 25764), (978, 21470), (1130, 18582), (1140, 18419), (1356, 15485), (1630, 12882), (1695, 12388), (1956, 10735), (2147, 9780), (2260, 9291), (2445, 8588), (3097, 6780), (3260, 6441), (3390, 6194), (4294, 4890)]