21366378

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^2$

素因数の和:168

約数の個数: 72

約数和(自身を含む): 53030016

約数和(自身を除く): 31663638

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 31, 33, 59, 62, 66, 93, 99, 118, 177, 186, 198, 279, 341, 354, 531, 558, 649, 682, 1023, 1062, 1298, 1829, 1947, 2046, 3069, 3481, 3658, 3894, 5487, 5841, 6138, 6962, 10443, 10974, 11682, 16461, 20119, 20886, 31329, 32922, 38291, 40238, 60357, 62658, 76582, 107911, 114873, 120714, 181071, 215822, 229746, 323733, 344619, 362142, 647466, 689238, 971199, 1187021, 1942398, 2374042, 3561063, 7122126, 10683189, 21366378]

約数ペア:

[(1, 21366378), (2, 10683189), (3, 7122126), (6, 3561063), (9, 2374042), (11, 1942398), (18, 1187021), (22, 971199), (31, 689238), (33, 647466), (59, 362142), (62, 344619), (66, 323733), (93, 229746), (99, 215822), (118, 181071), (177, 120714), (186, 114873), (198, 107911), (279, 76582), (341, 62658), (354, 60357), (531, 40238), (558, 38291), (649, 32922), (682, 31329), (1023, 20886), (1062, 20119), (1298, 16461), (1829, 11682), (1947, 10974), (2046, 10443), (3069, 6962), (3481, 6138), (3658, 5841), (3894, 5487)]