20906940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:331

約数の個数: 96

約数和(自身を含む): 62899200

約数和(自身を除く): 41992260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 103, 170, 199, 204, 206, 255, 309, 340, 398, 412, 510, 515, 597, 618, 796, 995, 1020, 1030, 1194, 1236, 1545, 1751, 1990, 2060, 2388, 2985, 3090, 3383, 3502, 3980, 5253, 5970, 6180, 6766, 7004, 8755, 10149, 10506, 11940, 13532, 16915, 17510, 20298, 20497, 21012, 26265, 33830, 35020, 40596, 40994, 50745, 52530, 61491, 67660, 81988, 101490, 102485, 105060, 122982, 202980, 204970, 245964, 307455, 348449, 409940, 614910, 696898, 1045347, 1229820, 1393796, 1742245, 2090694, 3484490, 4181388, 5226735, 6968980, 10453470, 20906940]

約数ペア:

[(1, 20906940), (2, 10453470), (3, 6968980), (4, 5226735), (5, 4181388), (6, 3484490), (10, 2090694), (12, 1742245), (15, 1393796), (17, 1229820), (20, 1045347), (30, 696898), (34, 614910), (51, 409940), (60, 348449), (68, 307455), (85, 245964), (102, 204970), (103, 202980), (170, 122982), (199, 105060), (204, 102485), (206, 101490), (255, 81988), (309, 67660), (340, 61491), (398, 52530), (412, 50745), (510, 40994), (515, 40596), (597, 35020), (618, 33830), (796, 26265), (995, 21012), (1020, 20497), (1030, 20298), (1194, 17510), (1236, 16915), (1545, 13532), (1751, 11940), (1990, 10506), (2060, 10149), (2388, 8755), (2985, 7004), (3090, 6766), (3383, 6180), (3502, 5970), (3980, 5253)]