8001990

素因数分解:

$2^1\times 3^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:148

約数の個数: 96

約数和(自身を含む): 22407840

約数和(自身を除く): 14405850

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 54, 74, 81, 89, 90, 111, 135, 162, 178, 185, 222, 243, 267, 270, 333, 370, 405, 445, 486, 534, 555, 666, 801, 810, 890, 999, 1110, 1215, 1335, 1602, 1665, 1998, 2403, 2430, 2670, 2997, 3293, 3330, 4005, 4806, 4995, 5994, 6586, 7209, 8010, 8991, 9879, 9990, 12015, 14418, 14985, 16465, 17982, 19758, 21627, 24030, 29637, 29970, 32930, 36045, 43254, 44955, 49395, 59274, 72090, 88911, 89910, 98790, 108135, 148185, 177822, 216270, 266733, 296370, 444555, 533466, 800199, 889110, 1333665, 1600398, 2667330, 4000995, 8001990]

約数ペア:

[(1, 8001990), (2, 4000995), (3, 2667330), (5, 1600398), (6, 1333665), (9, 889110), (10, 800199), (15, 533466), (18, 444555), (27, 296370), (30, 266733), (37, 216270), (45, 177822), (54, 148185), (74, 108135), (81, 98790), (89, 89910), (90, 88911), (111, 72090), (135, 59274), (162, 49395), (178, 44955), (185, 43254), (222, 36045), (243, 32930), (267, 29970), (270, 29637), (333, 24030), (370, 21627), (405, 19758), (445, 17982), (486, 16465), (534, 14985), (555, 14418), (666, 12015), (801, 9990), (810, 9879), (890, 8991), (999, 8010), (1110, 7209), (1215, 6586), (1335, 5994), (1602, 4995), (1665, 4806), (1998, 4005), (2403, 3330), (2430, 3293), (2670, 2997)]