19211920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1$

素因数の和:82

約数の個数: 180

約数和(自身を含む): 58204980

約数和(自身を除く): 38993060

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 29, 35, 40, 49, 52, 56, 58, 65, 70, 80, 91, 98, 104, 112, 116, 130, 140, 145, 169, 182, 196, 203, 208, 232, 245, 260, 280, 290, 338, 364, 377, 392, 406, 455, 464, 490, 520, 560, 580, 637, 676, 728, 754, 784, 812, 845, 910, 980, 1015, 1040, 1160, 1183, 1274, 1352, 1421, 1456, 1508, 1624, 1690, 1820, 1885, 1960, 2030, 2320, 2366, 2548, 2639, 2704, 2842, 3016, 3185, 3248, 3380, 3640, 3770, 3920, 4060, 4732, 4901, 5096, 5278, 5684, 5915, 6032, 6370, 6760, 7105, 7280, 7540, 8120, 8281, 9464, 9802, 10192, 10556, 11368, 11830, 12740, 13195, 13520, 14210, 15080, 16240, 16562, 18473, 18928, 19604, 21112, 22736, 23660, 24505, 25480, 26390, 28420, 30160, 33124, 34307, 36946, 39208, 41405, 42224, 47320, 49010, 50960, 52780, 56840, 66248, 68614, 73892, 78416, 82810, 92365, 94640, 98020, 105560, 113680, 132496, 137228, 147784, 165620, 171535, 184730, 196040, 211120, 240149, 274456, 295568, 331240, 343070, 369460, 392080, 480298, 548912, 662480, 686140, 738920, 960596, 1200745, 1372280, 1477840, 1921192, 2401490, 2744560, 3842384, 4802980, 9605960, 19211920]

約数ペア:

[(1, 19211920), (2, 9605960), (4, 4802980), (5, 3842384), (7, 2744560), (8, 2401490), (10, 1921192), (13, 1477840), (14, 1372280), (16, 1200745), (20, 960596), (26, 738920), (28, 686140), (29, 662480), (35, 548912), (40, 480298), (49, 392080), (52, 369460), (56, 343070), (58, 331240), (65, 295568), (70, 274456), (80, 240149), (91, 211120), (98, 196040), (104, 184730), (112, 171535), (116, 165620), (130, 147784), (140, 137228), (145, 132496), (169, 113680), (182, 105560), (196, 98020), (203, 94640), (208, 92365), (232, 82810), (245, 78416), (260, 73892), (280, 68614), (290, 66248), (338, 56840), (364, 52780), (377, 50960), (392, 49010), (406, 47320), (455, 42224), (464, 41405), (490, 39208), (520, 36946), (560, 34307), (580, 33124), (637, 30160), (676, 28420), (728, 26390), (754, 25480), (784, 24505), (812, 23660), (845, 22736), (910, 21112), (980, 19604), (1015, 18928), (1040, 18473), (1160, 16562), (1183, 16240), (1274, 15080), (1352, 14210), (1421, 13520), (1456, 13195), (1508, 12740), (1624, 11830), (1690, 11368), (1820, 10556), (1885, 10192), (1960, 9802), (2030, 9464), (2320, 8281), (2366, 8120), (2548, 7540), (2639, 7280), (2704, 7105), (2842, 6760), (3016, 6370), (3185, 6032), (3248, 5915), (3380, 5684), (3640, 5278), (3770, 5096), (3920, 4901), (4060, 4732)]