28921320

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:520

約数の個数: 128

約数和(自身を含む): 98208000

約数和(自身を除く): 69286680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 61, 72, 90, 108, 120, 122, 135, 180, 183, 216, 244, 270, 305, 360, 366, 439, 488, 540, 549, 610, 732, 878, 915, 1080, 1098, 1220, 1317, 1464, 1647, 1756, 1830, 2195, 2196, 2440, 2634, 2745, 3294, 3512, 3660, 3951, 4390, 4392, 5268, 5490, 6585, 6588, 7320, 7902, 8235, 8780, 10536, 10980, 11853, 13170, 13176, 15804, 16470, 17560, 19755, 21960, 23706, 26340, 26779, 31608, 32940, 39510, 47412, 52680, 53558, 59265, 65880, 79020, 80337, 94824, 107116, 118530, 133895, 158040, 160674, 214232, 237060, 241011, 267790, 321348, 401685, 474120, 482022, 535580, 642696, 723033, 803370, 964044, 1071160, 1205055, 1446066, 1606740, 1928088, 2410110, 2892132, 3213480, 3615165, 4820220, 5784264, 7230330, 9640440, 14460660, 28921320]

約数ペア:

[(1, 28921320), (2, 14460660), (3, 9640440), (4, 7230330), (5, 5784264), (6, 4820220), (8, 3615165), (9, 3213480), (10, 2892132), (12, 2410110), (15, 1928088), (18, 1606740), (20, 1446066), (24, 1205055), (27, 1071160), (30, 964044), (36, 803370), (40, 723033), (45, 642696), (54, 535580), (60, 482022), (61, 474120), (72, 401685), (90, 321348), (108, 267790), (120, 241011), (122, 237060), (135, 214232), (180, 160674), (183, 158040), (216, 133895), (244, 118530), (270, 107116), (305, 94824), (360, 80337), (366, 79020), (439, 65880), (488, 59265), (540, 53558), (549, 52680), (610, 47412), (732, 39510), (878, 32940), (915, 31608), (1080, 26779), (1098, 26340), (1220, 23706), (1317, 21960), (1464, 19755), (1647, 17560), (1756, 16470), (1830, 15804), (2195, 13176), (2196, 13170), (2440, 11853), (2634, 10980), (2745, 10536), (3294, 8780), (3512, 8235), (3660, 7902), (3951, 7320), (4390, 6588), (4392, 6585), (5268, 5490)]