1821440180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{8599}}^1$

素因数の和:8721

約数の個数: 96

約数和(自身を含む): 4681152000

約数和(自身を除く): 2859711820

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 89, 119, 140, 170, 178, 238, 340, 356, 445, 476, 595, 623, 890, 1190, 1246, 1513, 1780, 2380, 2492, 3026, 3115, 6052, 6230, 7565, 8599, 10591, 12460, 15130, 17198, 21182, 30260, 34396, 42364, 42995, 52955, 60193, 85990, 105910, 120386, 146183, 171980, 211820, 240772, 292366, 300965, 584732, 601930, 730915, 765311, 1023281, 1203860, 1461830, 1530622, 2046562, 2923660, 3061244, 3826555, 4093124, 5116405, 5357177, 7653110, 10232810, 10714354, 13010287, 15306220, 20465620, 21428708, 26020574, 26785885, 52041148, 53571770, 65051435, 91072009, 107143540, 130102870, 182144018, 260205740, 364288036, 455360045, 910720090, 1821440180]

約数ペア:

[(1, 1821440180), (2, 910720090), (4, 455360045), (5, 364288036), (7, 260205740), (10, 182144018), (14, 130102870), (17, 107143540), (20, 91072009), (28, 65051435), (34, 53571770), (35, 52041148), (68, 26785885), (70, 26020574), (85, 21428708), (89, 20465620), (119, 15306220), (140, 13010287), (170, 10714354), (178, 10232810), (238, 7653110), (340, 5357177), (356, 5116405), (445, 4093124), (476, 3826555), (595, 3061244), (623, 2923660), (890, 2046562), (1190, 1530622), (1246, 1461830), (1513, 1203860), (1780, 1023281), (2380, 765311), (2492, 730915), (3026, 601930), (3115, 584732), (6052, 300965), (6230, 292366), (7565, 240772), (8599, 211820), (10591, 171980), (12460, 146183), (15130, 120386), (17198, 105910), (21182, 85990), (30260, 60193), (34396, 52955), (42364, 42995)]