28727460

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:304

約数の個数: 144

約数和(自身を含む): 94663296

約数和(自身を除く): 65935836

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 81, 90, 92, 108, 115, 135, 138, 162, 180, 207, 230, 243, 257, 270, 276, 324, 345, 405, 414, 460, 486, 514, 540, 621, 690, 771, 810, 828, 972, 1028, 1035, 1215, 1242, 1285, 1380, 1542, 1620, 1863, 2070, 2313, 2430, 2484, 2570, 3084, 3105, 3726, 3855, 4140, 4626, 4860, 5140, 5589, 5911, 6210, 6939, 7452, 7710, 9252, 9315, 11178, 11565, 11822, 12420, 13878, 15420, 17733, 18630, 20817, 22356, 23130, 23644, 27756, 27945, 29555, 34695, 35466, 37260, 41634, 46260, 53199, 55890, 59110, 62451, 69390, 70932, 83268, 88665, 104085, 106398, 111780, 118220, 124902, 138780, 159597, 177330, 208170, 212796, 249804, 265995, 312255, 319194, 354660, 416340, 478791, 531990, 624510, 638388, 797985, 957582, 1063980, 1249020, 1436373, 1595970, 1915164, 2393955, 2872746, 3191940, 4787910, 5745492, 7181865, 9575820, 14363730, 28727460]

約数ペア:

[(1, 28727460), (2, 14363730), (3, 9575820), (4, 7181865), (5, 5745492), (6, 4787910), (9, 3191940), (10, 2872746), (12, 2393955), (15, 1915164), (18, 1595970), (20, 1436373), (23, 1249020), (27, 1063980), (30, 957582), (36, 797985), (45, 638388), (46, 624510), (54, 531990), (60, 478791), (69, 416340), (81, 354660), (90, 319194), (92, 312255), (108, 265995), (115, 249804), (135, 212796), (138, 208170), (162, 177330), (180, 159597), (207, 138780), (230, 124902), (243, 118220), (257, 111780), (270, 106398), (276, 104085), (324, 88665), (345, 83268), (405, 70932), (414, 69390), (460, 62451), (486, 59110), (514, 55890), (540, 53199), (621, 46260), (690, 41634), (771, 37260), (810, 35466), (828, 34695), (972, 29555), (1028, 27945), (1035, 27756), (1215, 23644), (1242, 23130), (1285, 22356), (1380, 20817), (1542, 18630), (1620, 17733), (1863, 15420), (2070, 13878), (2313, 12420), (2430, 11822), (2484, 11565), (2570, 11178), (3084, 9315), (3105, 9252), (3726, 7710), (3855, 7452), (4140, 6939), (4626, 6210), (4860, 5911), (5140, 5589)]