200021920

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{823}}^1$

素因数の和:883

約数の個数: 144

約数和(自身を含む): 568124928

約数和(自身を除く): 368103008

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 160, 196, 217, 224, 245, 248, 280, 310, 392, 434, 490, 496, 560, 620, 784, 823, 868, 980, 992, 1085, 1120, 1240, 1519, 1568, 1646, 1736, 1960, 2170, 2480, 3038, 3292, 3472, 3920, 4115, 4340, 4960, 5761, 6076, 6584, 6944, 7595, 7840, 8230, 8680, 11522, 12152, 13168, 15190, 16460, 17360, 23044, 24304, 25513, 26336, 28805, 30380, 32920, 34720, 40327, 46088, 48608, 51026, 57610, 60760, 65840, 80654, 92176, 102052, 115220, 121520, 127565, 131680, 161308, 178591, 184352, 201635, 204104, 230440, 243040, 255130, 322616, 357182, 403270, 408208, 460880, 510260, 645232, 714364, 806540, 816416, 892955, 921760, 1020520, 1250137, 1290464, 1428728, 1613080, 1785910, 2041040, 2500274, 2857456, 3226160, 3571820, 4082080, 5000548, 5714912, 6250685, 6452320, 7143640, 10001096, 12501370, 14287280, 20002192, 25002740, 28574560, 40004384, 50005480, 100010960, 200021920]

約数ペア:

[(1, 200021920), (2, 100010960), (4, 50005480), (5, 40004384), (7, 28574560), (8, 25002740), (10, 20002192), (14, 14287280), (16, 12501370), (20, 10001096), (28, 7143640), (31, 6452320), (32, 6250685), (35, 5714912), (40, 5000548), (49, 4082080), (56, 3571820), (62, 3226160), (70, 2857456), (80, 2500274), (98, 2041040), (112, 1785910), (124, 1613080), (140, 1428728), (155, 1290464), (160, 1250137), (196, 1020520), (217, 921760), (224, 892955), (245, 816416), (248, 806540), (280, 714364), (310, 645232), (392, 510260), (434, 460880), (490, 408208), (496, 403270), (560, 357182), (620, 322616), (784, 255130), (823, 243040), (868, 230440), (980, 204104), (992, 201635), (1085, 184352), (1120, 178591), (1240, 161308), (1519, 131680), (1568, 127565), (1646, 121520), (1736, 115220), (1960, 102052), (2170, 92176), (2480, 80654), (3038, 65840), (3292, 60760), (3472, 57610), (3920, 51026), (4115, 48608), (4340, 46088), (4960, 40327), (5761, 34720), (6076, 32920), (6584, 30380), (6944, 28805), (7595, 26336), (7840, 25513), (8230, 24304), (8680, 23044), (11522, 17360), (12152, 16460), (13168, 15190)]