20120810255

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{449}}^1\times {\mathrm{661}}^1$

素因数の和:1284

約数の個数: 64

約数和(自身を含む): 30028320000

約数和(自身を除く): 9907509745

約数列:

[1, 5, 7, 13, 35, 65, 91, 149, 449, 455, 661, 745, 1043, 1937, 2245, 3143, 3305, 4627, 5215, 5837, 8593, 9685, 13559, 15715, 23135, 29185, 40859, 42965, 60151, 66901, 67795, 98489, 204295, 296789, 300755, 334505, 468307, 492445, 689423, 869713, 1280357, 1483945, 2077523, 2341535, 3447115, 3858257, 4348565, 6087991, 6401785, 8962499, 10387615, 19291285, 27007799, 30439955, 44221561, 44812495, 135038995, 221107805, 309550927, 574880293, 1547754635, 2874401465, 4024162051, 20120810255]

約数ペア:

[(1, 20120810255), (5, 4024162051), (7, 2874401465), (13, 1547754635), (35, 574880293), (65, 309550927), (91, 221107805), (149, 135038995), (449, 44812495), (455, 44221561), (661, 30439955), (745, 27007799), (1043, 19291285), (1937, 10387615), (2245, 8962499), (3143, 6401785), (3305, 6087991), (4627, 4348565), (5215, 3858257), (5837, 3447115), (8593, 2341535), (9685, 2077523), (13559, 1483945), (15715, 1280357), (23135, 869713), (29185, 689423), (40859, 492445), (42965, 468307), (60151, 334505), (66901, 300755), (67795, 296789), (98489, 204295)]