81172520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{617}}^1$

素因数の和:675

約数の個数: 128

約数和(自身を含む): 224259840

約数和(自身を除く): 143087320

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 23, 26, 40, 44, 46, 52, 55, 65, 88, 92, 104, 110, 115, 130, 143, 184, 220, 230, 253, 260, 286, 299, 440, 460, 506, 520, 572, 598, 617, 715, 920, 1012, 1144, 1196, 1234, 1265, 1430, 1495, 2024, 2392, 2468, 2530, 2860, 2990, 3085, 3289, 4936, 5060, 5720, 5980, 6170, 6578, 6787, 8021, 10120, 11960, 12340, 13156, 13574, 14191, 16042, 16445, 24680, 26312, 27148, 28382, 32084, 32890, 33935, 40105, 54296, 56764, 64168, 65780, 67870, 70955, 80210, 88231, 113528, 131560, 135740, 141910, 156101, 160420, 176462, 184483, 271480, 283820, 312202, 320840, 352924, 368966, 441155, 567640, 624404, 705848, 737932, 780505, 882310, 922415, 1248808, 1475864, 1561010, 1764620, 1844830, 2029313, 3122020, 3529240, 3689660, 4058626, 6244040, 7379320, 8117252, 10146565, 16234504, 20293130, 40586260, 81172520]

約数ペア:

[(1, 81172520), (2, 40586260), (4, 20293130), (5, 16234504), (8, 10146565), (10, 8117252), (11, 7379320), (13, 6244040), (20, 4058626), (22, 3689660), (23, 3529240), (26, 3122020), (40, 2029313), (44, 1844830), (46, 1764620), (52, 1561010), (55, 1475864), (65, 1248808), (88, 922415), (92, 882310), (104, 780505), (110, 737932), (115, 705848), (130, 624404), (143, 567640), (184, 441155), (220, 368966), (230, 352924), (253, 320840), (260, 312202), (286, 283820), (299, 271480), (440, 184483), (460, 176462), (506, 160420), (520, 156101), (572, 141910), (598, 135740), (617, 131560), (715, 113528), (920, 88231), (1012, 80210), (1144, 70955), (1196, 67870), (1234, 65780), (1265, 64168), (1430, 56764), (1495, 54296), (2024, 40105), (2392, 33935), (2468, 32890), (2530, 32084), (2860, 28382), (2990, 27148), (3085, 26312), (3289, 24680), (4936, 16445), (5060, 16042), (5720, 14191), (5980, 13574), (6170, 13156), (6578, 12340), (6787, 11960), (8021, 10120)]