20961957735

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{167}}^1\times {\mathrm{337}}^1$

素因数の和:638

約数の個数: 128

約数和(自身を含む): 39249100800

約数和(自身を除く): 18287143065

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 89, 93, 135, 155, 167, 267, 279, 337, 445, 465, 501, 801, 835, 837, 1011, 1335, 1395, 1503, 1685, 2403, 2505, 2759, 3033, 4005, 4185, 4509, 5055, 5177, 7515, 8277, 9099, 10447, 12015, 13795, 14863, 15165, 15531, 22545, 24831, 25885, 29993, 31341, 41385, 44589, 45495, 46593, 52235, 56279, 74315, 74493, 77655, 89979, 94023, 124155, 133767, 139779, 149965, 156705, 168837, 222945, 232965, 269937, 281395, 282069, 372465, 401301, 449895, 460753, 470115, 506511, 668835, 698895, 809811, 844185, 929783, 1349685, 1382259, 1410345, 1519533, 1744649, 2006505, 2303765, 2532555, 2789349, 4049055, 4146777, 4648915, 5008831, 5233947, 6911295, 7597665, 8368047, 8723245, 12440331, 13946745, 15026493, 15701841, 20733885, 25044155, 25104141, 26169735, 41840235, 45079479, 47105523, 62201655, 75132465, 78509205, 125520705, 135238437, 155273761, 225397395, 235527615, 465821283, 676192185, 776368805, 1397463849, 2329106415, 4192391547, 6987319245, 20961957735]

約数ペア:

[(1, 20961957735), (3, 6987319245), (5, 4192391547), (9, 2329106415), (15, 1397463849), (27, 776368805), (31, 676192185), (45, 465821283), (89, 235527615), (93, 225397395), (135, 155273761), (155, 135238437), (167, 125520705), (267, 78509205), (279, 75132465), (337, 62201655), (445, 47105523), (465, 45079479), (501, 41840235), (801, 26169735), (835, 25104141), (837, 25044155), (1011, 20733885), (1335, 15701841), (1395, 15026493), (1503, 13946745), (1685, 12440331), (2403, 8723245), (2505, 8368047), (2759, 7597665), (3033, 6911295), (4005, 5233947), (4185, 5008831), (4509, 4648915), (5055, 4146777), (5177, 4049055), (7515, 2789349), (8277, 2532555), (9099, 2303765), (10447, 2006505), (12015, 1744649), (13795, 1519533), (14863, 1410345), (15165, 1382259), (15531, 1349685), (22545, 929783), (24831, 844185), (25885, 809811), (29993, 698895), (31341, 668835), (41385, 506511), (44589, 470115), (45495, 460753), (46593, 449895), (52235, 401301), (56279, 372465), (74315, 282069), (74493, 281395), (77655, 269937), (89979, 232965), (94023, 222945), (124155, 168837), (133767, 156705), (139779, 149965)]