28499900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1993}}^1$

素因数の和:2031

約数の個数: 72

約数和(自身を含む): 72693264

約数和(自身を除く): 44193364

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 130, 143, 220, 260, 275, 286, 325, 550, 572, 650, 715, 1100, 1300, 1430, 1993, 2860, 3575, 3986, 7150, 7972, 9965, 14300, 19930, 21923, 25909, 39860, 43846, 49825, 51818, 87692, 99650, 103636, 109615, 129545, 199300, 219230, 259090, 284999, 438460, 518180, 548075, 569998, 647725, 1096150, 1139996, 1295450, 1424995, 2192300, 2590900, 2849990, 5699980, 7124975, 14249950, 28499900]

約数ペア:

[(1, 28499900), (2, 14249950), (4, 7124975), (5, 5699980), (10, 2849990), (11, 2590900), (13, 2192300), (20, 1424995), (22, 1295450), (25, 1139996), (26, 1096150), (44, 647725), (50, 569998), (52, 548075), (55, 518180), (65, 438460), (100, 284999), (110, 259090), (130, 219230), (143, 199300), (220, 129545), (260, 109615), (275, 103636), (286, 99650), (325, 87692), (550, 51818), (572, 49825), (650, 43846), (715, 39860), (1100, 25909), (1300, 21923), (1430, 19930), (1993, 14300), (2860, 9965), (3575, 7972), (3986, 7150)]