21207550

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:170

約数の個数: 96

約数和(自身を含む): 49996800

約数和(自身を除く): 28789250

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 59, 65, 70, 79, 91, 118, 130, 158, 175, 182, 295, 325, 350, 395, 413, 455, 553, 590, 650, 767, 790, 826, 910, 1027, 1106, 1475, 1534, 1975, 2054, 2065, 2275, 2765, 2950, 3835, 3950, 4130, 4550, 4661, 5135, 5369, 5530, 7189, 7670, 9322, 10270, 10325, 10738, 13825, 14378, 19175, 20650, 23305, 25675, 26845, 27650, 32627, 35945, 38350, 46610, 51350, 53690, 60593, 65254, 71890, 116525, 121186, 134225, 163135, 179725, 233050, 268450, 302965, 326270, 359450, 424151, 605930, 815675, 848302, 1514825, 1631350, 2120755, 3029650, 4241510, 10603775, 21207550]

約数ペア:

[(1, 21207550), (2, 10603775), (5, 4241510), (7, 3029650), (10, 2120755), (13, 1631350), (14, 1514825), (25, 848302), (26, 815675), (35, 605930), (50, 424151), (59, 359450), (65, 326270), (70, 302965), (79, 268450), (91, 233050), (118, 179725), (130, 163135), (158, 134225), (175, 121186), (182, 116525), (295, 71890), (325, 65254), (350, 60593), (395, 53690), (413, 51350), (455, 46610), (553, 38350), (590, 35945), (650, 32627), (767, 27650), (790, 26845), (826, 25675), (910, 23305), (1027, 20650), (1106, 19175), (1475, 14378), (1534, 13825), (1975, 10738), (2054, 10325), (2065, 10270), (2275, 9322), (2765, 7670), (2950, 7189), (3835, 5530), (3950, 5369), (4130, 5135), (4550, 4661)]