21496980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:313

約数の個数: 96

約数和(自身を含む): 64310400

約数和(自身を除く): 42813420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 109, 114, 173, 190, 218, 228, 285, 327, 346, 380, 436, 519, 545, 570, 654, 692, 865, 1038, 1090, 1140, 1308, 1635, 1730, 2071, 2076, 2180, 2595, 3270, 3287, 3460, 4142, 5190, 6213, 6540, 6574, 8284, 9861, 10355, 10380, 12426, 13148, 16435, 18857, 19722, 20710, 24852, 31065, 32870, 37714, 39444, 41420, 49305, 56571, 62130, 65740, 75428, 94285, 98610, 113142, 124260, 188570, 197220, 226284, 282855, 358283, 377140, 565710, 716566, 1074849, 1131420, 1433132, 1791415, 2149698, 3582830, 4299396, 5374245, 7165660, 10748490, 21496980]

約数ペア:

[(1, 21496980), (2, 10748490), (3, 7165660), (4, 5374245), (5, 4299396), (6, 3582830), (10, 2149698), (12, 1791415), (15, 1433132), (19, 1131420), (20, 1074849), (30, 716566), (38, 565710), (57, 377140), (60, 358283), (76, 282855), (95, 226284), (109, 197220), (114, 188570), (173, 124260), (190, 113142), (218, 98610), (228, 94285), (285, 75428), (327, 65740), (346, 62130), (380, 56571), (436, 49305), (519, 41420), (545, 39444), (570, 37714), (654, 32870), (692, 31065), (865, 24852), (1038, 20710), (1090, 19722), (1140, 18857), (1308, 16435), (1635, 13148), (1730, 12426), (2071, 10380), (2076, 10355), (2180, 9861), (2595, 8284), (3270, 6574), (3287, 6540), (3460, 6213), (4142, 5190)]