21696420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:357

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 43621980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 89, 102, 170, 178, 204, 239, 255, 267, 340, 356, 445, 478, 510, 534, 717, 890, 956, 1020, 1068, 1195, 1335, 1434, 1513, 1780, 2390, 2670, 2868, 3026, 3585, 4063, 4539, 4780, 5340, 6052, 7170, 7565, 8126, 9078, 12189, 14340, 15130, 16252, 18156, 20315, 21271, 22695, 24378, 30260, 40630, 42542, 45390, 48756, 60945, 63813, 81260, 85084, 90780, 106355, 121890, 127626, 212710, 243780, 255252, 319065, 361607, 425420, 638130, 723214, 1084821, 1276260, 1446428, 1808035, 2169642, 3616070, 4339284, 5424105, 7232140, 10848210, 21696420]

約数ペア:

[(1, 21696420), (2, 10848210), (3, 7232140), (4, 5424105), (5, 4339284), (6, 3616070), (10, 2169642), (12, 1808035), (15, 1446428), (17, 1276260), (20, 1084821), (30, 723214), (34, 638130), (51, 425420), (60, 361607), (68, 319065), (85, 255252), (89, 243780), (102, 212710), (170, 127626), (178, 121890), (204, 106355), (239, 90780), (255, 85084), (267, 81260), (340, 63813), (356, 60945), (445, 48756), (478, 45390), (510, 42542), (534, 40630), (717, 30260), (890, 24378), (956, 22695), (1020, 21271), (1068, 20315), (1195, 18156), (1335, 16252), (1434, 15130), (1513, 14340), (1780, 12189), (2390, 9078), (2670, 8126), (2868, 7565), (3026, 7170), (3585, 6052), (4063, 5340), (4539, 4780)]