81220620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3359}}^1$

素因数の和:3415

約数の個数: 96

約数和(自身を含む): 252887040

約数和(自身を除く): 171666420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 31, 39, 52, 60, 62, 65, 78, 93, 124, 130, 155, 156, 186, 195, 260, 310, 372, 390, 403, 465, 620, 780, 806, 930, 1209, 1612, 1860, 2015, 2418, 3359, 4030, 4836, 6045, 6718, 8060, 10077, 12090, 13436, 16795, 20154, 24180, 33590, 40308, 43667, 50385, 67180, 87334, 100770, 104129, 131001, 174668, 201540, 208258, 218335, 262002, 312387, 416516, 436670, 520645, 524004, 624774, 655005, 873340, 1041290, 1249548, 1310010, 1353677, 1561935, 2082580, 2620020, 2707354, 3123870, 4061031, 5414708, 6247740, 6768385, 8122062, 13536770, 16244124, 20305155, 27073540, 40610310, 81220620]

約数ペア:

[(1, 81220620), (2, 40610310), (3, 27073540), (4, 20305155), (5, 16244124), (6, 13536770), (10, 8122062), (12, 6768385), (13, 6247740), (15, 5414708), (20, 4061031), (26, 3123870), (30, 2707354), (31, 2620020), (39, 2082580), (52, 1561935), (60, 1353677), (62, 1310010), (65, 1249548), (78, 1041290), (93, 873340), (124, 655005), (130, 624774), (155, 524004), (156, 520645), (186, 436670), (195, 416516), (260, 312387), (310, 262002), (372, 218335), (390, 208258), (403, 201540), (465, 174668), (620, 131001), (780, 104129), (806, 100770), (930, 87334), (1209, 67180), (1612, 50385), (1860, 43667), (2015, 40308), (2418, 33590), (3359, 24180), (4030, 20154), (4836, 16795), (6045, 13436), (6718, 12090), (8060, 10077)]