21415560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{179}}^1\times {\mathrm{997}}^1$

素因数の和:1190

約数の個数: 64

約数和(自身を含む): 64670400

約数和(自身を除く): 43254840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 179, 358, 537, 716, 895, 997, 1074, 1432, 1790, 1994, 2148, 2685, 2991, 3580, 3988, 4296, 4985, 5370, 5982, 7160, 7976, 9970, 10740, 11964, 14955, 19940, 21480, 23928, 29910, 39880, 59820, 119640, 178463, 356926, 535389, 713852, 892315, 1070778, 1427704, 1784630, 2141556, 2676945, 3569260, 4283112, 5353890, 7138520, 10707780, 21415560]

約数ペア:

[(1, 21415560), (2, 10707780), (3, 7138520), (4, 5353890), (5, 4283112), (6, 3569260), (8, 2676945), (10, 2141556), (12, 1784630), (15, 1427704), (20, 1070778), (24, 892315), (30, 713852), (40, 535389), (60, 356926), (120, 178463), (179, 119640), (358, 59820), (537, 39880), (716, 29910), (895, 23928), (997, 21480), (1074, 19940), (1432, 14955), (1790, 11964), (1994, 10740), (2148, 9970), (2685, 7976), (2991, 7160), (3580, 5982), (3988, 5370), (4296, 4985)]