21408972

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1$

素因数の和:303

約数の個数: 96

約数和(自身を含む): 58705920

約数和(自身を除く): 37296948

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 31, 38, 39, 52, 57, 62, 76, 78, 93, 114, 124, 156, 186, 228, 233, 247, 372, 403, 466, 494, 589, 699, 741, 806, 932, 988, 1178, 1209, 1398, 1482, 1612, 1767, 2356, 2418, 2796, 2964, 3029, 3534, 4427, 4836, 6058, 7068, 7223, 7657, 8854, 9087, 12116, 13281, 14446, 15314, 17708, 18174, 21669, 22971, 26562, 28892, 30628, 36348, 43338, 45942, 53124, 57551, 86676, 91884, 93899, 115102, 137237, 172653, 187798, 230204, 274474, 281697, 345306, 375596, 411711, 548948, 563394, 690612, 823422, 1126788, 1646844, 1784081, 3568162, 5352243, 7136324, 10704486, 21408972]

約数ペア:

[(1, 21408972), (2, 10704486), (3, 7136324), (4, 5352243), (6, 3568162), (12, 1784081), (13, 1646844), (19, 1126788), (26, 823422), (31, 690612), (38, 563394), (39, 548948), (52, 411711), (57, 375596), (62, 345306), (76, 281697), (78, 274474), (93, 230204), (114, 187798), (124, 172653), (156, 137237), (186, 115102), (228, 93899), (233, 91884), (247, 86676), (372, 57551), (403, 53124), (466, 45942), (494, 43338), (589, 36348), (699, 30628), (741, 28892), (806, 26562), (932, 22971), (988, 21669), (1178, 18174), (1209, 17708), (1398, 15314), (1482, 14446), (1612, 13281), (1767, 12116), (2356, 9087), (2418, 8854), (2796, 7657), (2964, 7223), (3029, 7068), (3534, 6058), (4427, 4836)]