66998440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{761}}^1$

素因数の和:874

約数の個数: 64

約数和(自身を含む): 158008320

約数和(自身を除く): 91009880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 155, 248, 284, 310, 355, 568, 620, 710, 761, 1240, 1420, 1522, 2201, 2840, 3044, 3805, 4402, 6088, 7610, 8804, 11005, 15220, 17608, 22010, 23591, 30440, 44020, 47182, 54031, 88040, 94364, 108062, 117955, 188728, 216124, 235910, 270155, 432248, 471820, 540310, 943640, 1080620, 1674961, 2161240, 3349922, 6699844, 8374805, 13399688, 16749610, 33499220, 66998440]

約数ペア:

[(1, 66998440), (2, 33499220), (4, 16749610), (5, 13399688), (8, 8374805), (10, 6699844), (20, 3349922), (31, 2161240), (40, 1674961), (62, 1080620), (71, 943640), (124, 540310), (142, 471820), (155, 432248), (248, 270155), (284, 235910), (310, 216124), (355, 188728), (568, 117955), (620, 108062), (710, 94364), (761, 88040), (1240, 54031), (1420, 47182), (1522, 44020), (2201, 30440), (2840, 23591), (3044, 22010), (3805, 17608), (4402, 15220), (6088, 11005), (7610, 8804)]