21520096

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{179}}^1$

素因数の和:236

約数の個数: 72

約数和(自身を含む): 48739320

約数和(自身を除く): 27219224

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 179, 208, 221, 272, 289, 358, 416, 442, 544, 578, 716, 884, 1156, 1432, 1768, 2312, 2327, 2864, 3043, 3536, 3757, 4624, 4654, 5728, 6086, 7072, 7514, 9248, 9308, 12172, 15028, 18616, 24344, 30056, 37232, 39559, 48688, 51731, 60112, 74464, 79118, 97376, 103462, 120224, 158236, 206924, 316472, 413848, 632944, 672503, 827696, 1265888, 1345006, 1655392, 2690012, 5380024, 10760048, 21520096]

約数ペア:

[(1, 21520096), (2, 10760048), (4, 5380024), (8, 2690012), (13, 1655392), (16, 1345006), (17, 1265888), (26, 827696), (32, 672503), (34, 632944), (52, 413848), (68, 316472), (104, 206924), (136, 158236), (179, 120224), (208, 103462), (221, 97376), (272, 79118), (289, 74464), (358, 60112), (416, 51731), (442, 48688), (544, 39559), (578, 37232), (716, 30056), (884, 24344), (1156, 18616), (1432, 15028), (1768, 12172), (2312, 9308), (2327, 9248), (2864, 7514), (3043, 7072), (3536, 6086), (3757, 5728), (4624, 4654)]