1638331390

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:745

約数の個数: 64

約数和(自身を含む): 3095718912

約数和(自身を除く): 1457387522

約数列:

[1, 2, 5, 10, 43, 71, 86, 103, 142, 206, 215, 355, 430, 515, 521, 710, 1030, 1042, 2605, 3053, 4429, 5210, 6106, 7313, 8858, 14626, 15265, 22145, 22403, 30530, 36565, 36991, 44290, 44806, 53663, 73130, 73982, 107326, 112015, 184955, 224030, 268315, 314459, 369910, 536630, 628918, 1572295, 1590613, 2307509, 3144590, 3181226, 3810073, 4615018, 7620146, 7953065, 11537545, 15906130, 19050365, 23075090, 38100730, 163833139, 327666278, 819165695, 1638331390]

約数ペア:

[(1, 1638331390), (2, 819165695), (5, 327666278), (10, 163833139), (43, 38100730), (71, 23075090), (86, 19050365), (103, 15906130), (142, 11537545), (206, 7953065), (215, 7620146), (355, 4615018), (430, 3810073), (515, 3181226), (521, 3144590), (710, 2307509), (1030, 1590613), (1042, 1572295), (2605, 628918), (3053, 536630), (4429, 369910), (5210, 314459), (6106, 268315), (7313, 224030), (8858, 184955), (14626, 112015), (15265, 107326), (22145, 73982), (22403, 73130), (30530, 53663), (36565, 44806), (36991, 44290)]