21080404260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{383}}^1\times {\mathrm{17987}}^1$

素因数の和:18402

約数の個数: 144

約数和(自身を含む): 67885848576

約数和(自身を除く): 46805444316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 383, 510, 612, 765, 766, 1020, 1149, 1530, 1532, 1915, 2298, 3060, 3447, 3830, 4596, 5745, 6511, 6894, 7660, 11490, 13022, 13788, 17235, 17987, 19533, 22980, 26044, 32555, 34470, 35974, 39066, 53961, 58599, 65110, 68940, 71948, 78132, 89935, 97665, 107922, 117198, 130220, 161883, 179870, 195330, 215844, 234396, 269805, 292995, 305779, 323766, 359740, 390660, 539610, 585990, 611558, 647532, 809415, 917337, 1079220, 1171980, 1223116, 1528895, 1618830, 1834674, 2752011, 3057790, 3237660, 3669348, 4586685, 5504022, 6115580, 6889021, 9173370, 11008044, 13760055, 13778042, 18346740, 20667063, 27520110, 27556084, 34445105, 41334126, 55040220, 62001189, 68890210, 82668252, 103335315, 117113357, 124002378, 137780420, 206670630, 234226714, 248004756, 310005945, 351340071, 413341260, 468453428, 585566785, 620011890, 702680142, 1054020213, 1171133570, 1240023780, 1405360284, 1756700355, 2108040426, 2342267140, 3513400710, 4216080852, 5270101065, 7026801420, 10540202130, 21080404260]

約数ペア:

[(1, 21080404260), (2, 10540202130), (3, 7026801420), (4, 5270101065), (5, 4216080852), (6, 3513400710), (9, 2342267140), (10, 2108040426), (12, 1756700355), (15, 1405360284), (17, 1240023780), (18, 1171133570), (20, 1054020213), (30, 702680142), (34, 620011890), (36, 585566785), (45, 468453428), (51, 413341260), (60, 351340071), (68, 310005945), (85, 248004756), (90, 234226714), (102, 206670630), (153, 137780420), (170, 124002378), (180, 117113357), (204, 103335315), (255, 82668252), (306, 68890210), (340, 62001189), (383, 55040220), (510, 41334126), (612, 34445105), (765, 27556084), (766, 27520110), (1020, 20667063), (1149, 18346740), (1530, 13778042), (1532, 13760055), (1915, 11008044), (2298, 9173370), (3060, 6889021), (3447, 6115580), (3830, 5504022), (4596, 4586685), (5745, 3669348), (6511, 3237660), (6894, 3057790), (7660, 2752011), (11490, 1834674), (13022, 1618830), (13788, 1528895), (17235, 1223116), (17987, 1171980), (19533, 1079220), (22980, 917337), (26044, 809415), (32555, 647532), (34470, 611558), (35974, 585990), (39066, 539610), (53961, 390660), (58599, 359740), (65110, 323766), (68940, 305779), (71948, 292995), (78132, 269805), (89935, 234396), (97665, 215844), (107922, 195330), (117198, 179870), (130220, 161883)]