38945920

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:214

約数の個数: 128

約数和(自身を含む): 104186880

約数和(自身を除く): 65240960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 151, 155, 160, 208, 248, 260, 302, 310, 320, 403, 416, 496, 520, 604, 620, 640, 755, 806, 832, 992, 1040, 1208, 1240, 1510, 1612, 1664, 1963, 1984, 2015, 2080, 2416, 2480, 3020, 3224, 3926, 3968, 4030, 4160, 4681, 4832, 4960, 6040, 6448, 7852, 8060, 8320, 9362, 9664, 9815, 9920, 12080, 12896, 15704, 16120, 18724, 19328, 19630, 19840, 23405, 24160, 25792, 31408, 32240, 37448, 39260, 46810, 48320, 51584, 60853, 62816, 64480, 74896, 78520, 93620, 96640, 121706, 125632, 128960, 149792, 157040, 187240, 243412, 251264, 257920, 299584, 304265, 314080, 374480, 486824, 599168, 608530, 628160, 748960, 973648, 1217060, 1256320, 1497920, 1947296, 2434120, 2995840, 3894592, 4868240, 7789184, 9736480, 19472960, 38945920]

約数ペア:

[(1, 38945920), (2, 19472960), (4, 9736480), (5, 7789184), (8, 4868240), (10, 3894592), (13, 2995840), (16, 2434120), (20, 1947296), (26, 1497920), (31, 1256320), (32, 1217060), (40, 973648), (52, 748960), (62, 628160), (64, 608530), (65, 599168), (80, 486824), (104, 374480), (124, 314080), (128, 304265), (130, 299584), (151, 257920), (155, 251264), (160, 243412), (208, 187240), (248, 157040), (260, 149792), (302, 128960), (310, 125632), (320, 121706), (403, 96640), (416, 93620), (496, 78520), (520, 74896), (604, 64480), (620, 62816), (640, 60853), (755, 51584), (806, 48320), (832, 46810), (992, 39260), (1040, 37448), (1208, 32240), (1240, 31408), (1510, 25792), (1612, 24160), (1664, 23405), (1963, 19840), (1984, 19630), (2015, 19328), (2080, 18724), (2416, 16120), (2480, 15704), (3020, 12896), (3224, 12080), (3926, 9920), (3968, 9815), (4030, 9664), (4160, 9362), (4681, 8320), (4832, 8060), (4960, 7852), (6040, 6448)]