20405232

素因数分解:

$2^4\times 3^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:199

約数の個数: 120

約数和(自身を含む): 61165728

約数和(自身を除く): 40760496

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 36, 46, 48, 61, 69, 72, 92, 101, 122, 138, 144, 183, 184, 202, 207, 244, 276, 303, 366, 368, 404, 414, 488, 549, 552, 606, 732, 808, 828, 909, 976, 1098, 1104, 1212, 1403, 1464, 1616, 1656, 1818, 2196, 2323, 2424, 2806, 2928, 3312, 3636, 4209, 4392, 4646, 4848, 5612, 6161, 6969, 7272, 8418, 8784, 9292, 11224, 12322, 12627, 13938, 14544, 16836, 18483, 18584, 20907, 22448, 24644, 25254, 27876, 33672, 36966, 37168, 41814, 49288, 50508, 55449, 55752, 67344, 73932, 83628, 98576, 101016, 110898, 111504, 141703, 147864, 167256, 202032, 221796, 283406, 295728, 334512, 425109, 443592, 566812, 850218, 887184, 1133624, 1275327, 1700436, 2267248, 2550654, 3400872, 5101308, 6801744, 10202616, 20405232]

約数ペア:

[(1, 20405232), (2, 10202616), (3, 6801744), (4, 5101308), (6, 3400872), (8, 2550654), (9, 2267248), (12, 1700436), (16, 1275327), (18, 1133624), (23, 887184), (24, 850218), (36, 566812), (46, 443592), (48, 425109), (61, 334512), (69, 295728), (72, 283406), (92, 221796), (101, 202032), (122, 167256), (138, 147864), (144, 141703), (183, 111504), (184, 110898), (202, 101016), (207, 98576), (244, 83628), (276, 73932), (303, 67344), (366, 55752), (368, 55449), (404, 50508), (414, 49288), (488, 41814), (549, 37168), (552, 36966), (606, 33672), (732, 27876), (808, 25254), (828, 24644), (909, 22448), (976, 20907), (1098, 18584), (1104, 18483), (1212, 16836), (1403, 14544), (1464, 13938), (1616, 12627), (1656, 12322), (1818, 11224), (2196, 9292), (2323, 8784), (2424, 8418), (2806, 7272), (2928, 6969), (3312, 6161), (3636, 5612), (4209, 4848), (4392, 4646)]