165571980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{283}}^1$

素因数の和:508

約数の個数: 144

約数和(自身を含む): 543916800

約数和(自身を除く): 378344820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 199, 210, 245, 283, 294, 398, 420, 490, 566, 588, 597, 735, 796, 849, 980, 995, 1132, 1194, 1393, 1415, 1470, 1698, 1981, 1990, 2388, 2786, 2830, 2940, 2985, 3396, 3962, 3980, 4179, 4245, 5572, 5660, 5943, 5970, 6965, 7924, 8358, 8490, 9751, 9905, 11886, 11940, 13867, 13930, 16716, 16980, 19502, 19810, 20895, 23772, 27734, 27860, 29253, 29715, 39004, 39620, 41601, 41790, 48755, 55468, 56317, 58506, 59430, 69335, 83202, 83580, 97510, 112634, 117012, 118860, 138670, 146265, 166404, 168951, 195020, 208005, 225268, 277340, 281585, 292530, 337902, 394219, 416010, 563170, 585060, 675804, 788438, 832020, 844755, 1126340, 1182657, 1576876, 1689510, 1971095, 2365314, 2759533, 3379020, 3942190, 4730628, 5519066, 5913285, 7884380, 8278599, 11038132, 11826570, 13797665, 16557198, 23653140, 27595330, 33114396, 41392995, 55190660, 82785990, 165571980]

約数ペア:

[(1, 165571980), (2, 82785990), (3, 55190660), (4, 41392995), (5, 33114396), (6, 27595330), (7, 23653140), (10, 16557198), (12, 13797665), (14, 11826570), (15, 11038132), (20, 8278599), (21, 7884380), (28, 5913285), (30, 5519066), (35, 4730628), (42, 3942190), (49, 3379020), (60, 2759533), (70, 2365314), (84, 1971095), (98, 1689510), (105, 1576876), (140, 1182657), (147, 1126340), (196, 844755), (199, 832020), (210, 788438), (245, 675804), (283, 585060), (294, 563170), (398, 416010), (420, 394219), (490, 337902), (566, 292530), (588, 281585), (597, 277340), (735, 225268), (796, 208005), (849, 195020), (980, 168951), (995, 166404), (1132, 146265), (1194, 138670), (1393, 118860), (1415, 117012), (1470, 112634), (1698, 97510), (1981, 83580), (1990, 83202), (2388, 69335), (2786, 59430), (2830, 58506), (2940, 56317), (2985, 55468), (3396, 48755), (3962, 41790), (3980, 41601), (4179, 39620), (4245, 39004), (5572, 29715), (5660, 29253), (5943, 27860), (5970, 27734), (6965, 23772), (7924, 20895), (8358, 19810), (8490, 19502), (9751, 16980), (9905, 16716), (11886, 13930), (11940, 13867)]