21581566174

素因数分解:

$2^1\times 7^5\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:356

約数の個数: 96

約数和(自身を含む): 39529728000

約数和(自身を除く): 17948161826

約数列:

[1, 2, 7, 14, 31, 49, 62, 98, 139, 149, 217, 278, 298, 343, 434, 686, 973, 1043, 1519, 1946, 2086, 2401, 3038, 4309, 4619, 4802, 6811, 7301, 8618, 9238, 10633, 13622, 14602, 16807, 20711, 21266, 30163, 32333, 33614, 41422, 47677, 51107, 60326, 64666, 74431, 95354, 102214, 144977, 148862, 211141, 226331, 289954, 333739, 357749, 422282, 452662, 521017, 642041, 667478, 715498, 1014839, 1042034, 1284082, 1477987, 1584317, 2029678, 2336173, 2504243, 2955974, 3168634, 4494287, 4672346, 5008486, 7103873, 8988574, 10345909, 11090219, 14207746, 20691818, 22180438, 31460009, 49727111, 62920018, 72421363, 77631533, 99454222, 144842726, 155263066, 220220063, 348089777, 440440126, 696179554, 1541540441, 3083080882, 10790783087, 21581566174]

約数ペア:

[(1, 21581566174), (2, 10790783087), (7, 3083080882), (14, 1541540441), (31, 696179554), (49, 440440126), (62, 348089777), (98, 220220063), (139, 155263066), (149, 144842726), (217, 99454222), (278, 77631533), (298, 72421363), (343, 62920018), (434, 49727111), (686, 31460009), (973, 22180438), (1043, 20691818), (1519, 14207746), (1946, 11090219), (2086, 10345909), (2401, 8988574), (3038, 7103873), (4309, 5008486), (4619, 4672346), (4802, 4494287), (6811, 3168634), (7301, 2955974), (8618, 2504243), (9238, 2336173), (10633, 2029678), (13622, 1584317), (14602, 1477987), (16807, 1284082), (20711, 1042034), (21266, 1014839), (30163, 715498), (32333, 667478), (33614, 642041), (41422, 521017), (47677, 452662), (51107, 422282), (60326, 357749), (64666, 333739), (74431, 289954), (95354, 226331), (102214, 211141), (144977, 148862)]