19921860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:282

約数の個数: 144

約数和(自身を含む): 70202496

約数和(自身を除く): 50280636

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 97, 105, 126, 140, 163, 180, 194, 210, 252, 291, 315, 326, 388, 420, 485, 489, 582, 630, 652, 679, 815, 873, 970, 978, 1141, 1164, 1260, 1358, 1455, 1467, 1630, 1746, 1940, 1956, 2037, 2282, 2445, 2716, 2910, 2934, 3260, 3395, 3423, 3492, 4074, 4365, 4564, 4890, 5705, 5820, 5868, 6111, 6790, 6846, 7335, 8148, 8730, 9780, 10185, 10269, 11410, 12222, 13580, 13692, 14670, 15811, 17115, 17460, 20370, 20538, 22820, 24444, 29340, 30555, 31622, 34230, 40740, 41076, 47433, 51345, 61110, 63244, 68460, 79055, 94866, 102690, 110677, 122220, 142299, 158110, 189732, 205380, 221354, 237165, 284598, 316220, 332031, 442708, 474330, 553385, 569196, 664062, 711495, 948660, 996093, 1106770, 1328124, 1422990, 1660155, 1992186, 2213540, 2845980, 3320310, 3984372, 4980465, 6640620, 9960930, 19921860]

約数ペア:

[(1, 19921860), (2, 9960930), (3, 6640620), (4, 4980465), (5, 3984372), (6, 3320310), (7, 2845980), (9, 2213540), (10, 1992186), (12, 1660155), (14, 1422990), (15, 1328124), (18, 1106770), (20, 996093), (21, 948660), (28, 711495), (30, 664062), (35, 569196), (36, 553385), (42, 474330), (45, 442708), (60, 332031), (63, 316220), (70, 284598), (84, 237165), (90, 221354), (97, 205380), (105, 189732), (126, 158110), (140, 142299), (163, 122220), (180, 110677), (194, 102690), (210, 94866), (252, 79055), (291, 68460), (315, 63244), (326, 61110), (388, 51345), (420, 47433), (485, 41076), (489, 40740), (582, 34230), (630, 31622), (652, 30555), (679, 29340), (815, 24444), (873, 22820), (970, 20538), (978, 20370), (1141, 17460), (1164, 17115), (1260, 15811), (1358, 14670), (1455, 13692), (1467, 13580), (1630, 12222), (1746, 11410), (1940, 10269), (1956, 10185), (2037, 9780), (2282, 8730), (2445, 8148), (2716, 7335), (2910, 6846), (2934, 6790), (3260, 6111), (3395, 5868), (3423, 5820), (3492, 5705), (4074, 4890), (4365, 4564)]