20492820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:250

約数の個数: 144

約数和(自身を含む): 67970448

約数和(自身を除く): 47477628

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 37, 45, 51, 60, 68, 74, 85, 90, 102, 111, 148, 153, 170, 180, 181, 185, 204, 222, 255, 306, 333, 340, 362, 370, 444, 510, 543, 555, 612, 629, 666, 724, 740, 765, 905, 1020, 1086, 1110, 1258, 1332, 1530, 1629, 1665, 1810, 1887, 2172, 2220, 2516, 2715, 3060, 3077, 3145, 3258, 3330, 3620, 3774, 5430, 5661, 6154, 6290, 6516, 6660, 6697, 7548, 8145, 9231, 9435, 10860, 11322, 12308, 12580, 13394, 15385, 16290, 18462, 18870, 20091, 22644, 26788, 27693, 28305, 30770, 32580, 33485, 36924, 37740, 40182, 46155, 55386, 56610, 60273, 61540, 66970, 80364, 92310, 100455, 110772, 113220, 113849, 120546, 133940, 138465, 184620, 200910, 227698, 241092, 276930, 301365, 341547, 401820, 455396, 553860, 569245, 602730, 683094, 1024641, 1138490, 1205460, 1366188, 1707735, 2049282, 2276980, 3415470, 4098564, 5123205, 6830940, 10246410, 20492820]

約数ペア:

[(1, 20492820), (2, 10246410), (3, 6830940), (4, 5123205), (5, 4098564), (6, 3415470), (9, 2276980), (10, 2049282), (12, 1707735), (15, 1366188), (17, 1205460), (18, 1138490), (20, 1024641), (30, 683094), (34, 602730), (36, 569245), (37, 553860), (45, 455396), (51, 401820), (60, 341547), (68, 301365), (74, 276930), (85, 241092), (90, 227698), (102, 200910), (111, 184620), (148, 138465), (153, 133940), (170, 120546), (180, 113849), (181, 113220), (185, 110772), (204, 100455), (222, 92310), (255, 80364), (306, 66970), (333, 61540), (340, 60273), (362, 56610), (370, 55386), (444, 46155), (510, 40182), (543, 37740), (555, 36924), (612, 33485), (629, 32580), (666, 30770), (724, 28305), (740, 27693), (765, 26788), (905, 22644), (1020, 20091), (1086, 18870), (1110, 18462), (1258, 16290), (1332, 15385), (1530, 13394), (1629, 12580), (1665, 12308), (1810, 11322), (1887, 10860), (2172, 9435), (2220, 9231), (2516, 8145), (2715, 7548), (3060, 6697), (3077, 6660), (3145, 6516), (3258, 6290), (3330, 6154), (3620, 5661), (3774, 5430)]