31918995

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:337

約数の個数: 64

約数和(自身を含む): 60825600

約数和(自身を除く): 28906605

約数列:

[1, 3, 5, 9, 15, 27, 29, 31, 45, 87, 93, 135, 145, 155, 261, 263, 279, 435, 465, 783, 789, 837, 899, 1305, 1315, 1395, 2367, 2697, 3915, 3945, 4185, 4495, 7101, 7627, 8091, 8153, 11835, 13485, 22881, 24273, 24459, 35505, 38135, 40455, 40765, 68643, 73377, 114405, 121365, 122295, 205929, 220131, 236437, 343215, 366885, 709311, 1029645, 1100655, 1182185, 2127933, 3546555, 6383799, 10639665, 31918995]

約数ペア:

[(1, 31918995), (3, 10639665), (5, 6383799), (9, 3546555), (15, 2127933), (27, 1182185), (29, 1100655), (31, 1029645), (45, 709311), (87, 366885), (93, 343215), (135, 236437), (145, 220131), (155, 205929), (261, 122295), (263, 121365), (279, 114405), (435, 73377), (465, 68643), (783, 40765), (789, 40455), (837, 38135), (899, 35505), (1305, 24459), (1315, 24273), (1395, 22881), (2367, 13485), (2697, 11835), (3915, 8153), (3945, 8091), (4185, 7627), (4495, 7101)]