20078730

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:213

約数の個数: 144

約数和(自身を含む): 63222120

約数和(自身を除く): 43143390

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 29, 30, 35, 42, 45, 49, 58, 63, 70, 87, 90, 98, 105, 126, 145, 147, 157, 174, 203, 210, 245, 261, 290, 294, 314, 315, 406, 435, 441, 471, 490, 522, 609, 630, 735, 785, 870, 882, 942, 1015, 1099, 1218, 1305, 1413, 1421, 1470, 1570, 1827, 2030, 2198, 2205, 2355, 2610, 2826, 2842, 3045, 3297, 3654, 4263, 4410, 4553, 4710, 5495, 6090, 6594, 7065, 7105, 7693, 8526, 9106, 9135, 9891, 10990, 12789, 13659, 14130, 14210, 15386, 16485, 18270, 19782, 21315, 22765, 23079, 25578, 27318, 31871, 32970, 38465, 40977, 42630, 45530, 46158, 49455, 63742, 63945, 68295, 69237, 76930, 81954, 95613, 98910, 115395, 127890, 136590, 138474, 159355, 191226, 204885, 223097, 230790, 286839, 318710, 346185, 409770, 446194, 478065, 573678, 669291, 692370, 956130, 1115485, 1338582, 1434195, 2007873, 2230970, 2868390, 3346455, 4015746, 6692910, 10039365, 20078730]

約数ペア:

[(1, 20078730), (2, 10039365), (3, 6692910), (5, 4015746), (6, 3346455), (7, 2868390), (9, 2230970), (10, 2007873), (14, 1434195), (15, 1338582), (18, 1115485), (21, 956130), (29, 692370), (30, 669291), (35, 573678), (42, 478065), (45, 446194), (49, 409770), (58, 346185), (63, 318710), (70, 286839), (87, 230790), (90, 223097), (98, 204885), (105, 191226), (126, 159355), (145, 138474), (147, 136590), (157, 127890), (174, 115395), (203, 98910), (210, 95613), (245, 81954), (261, 76930), (290, 69237), (294, 68295), (314, 63945), (315, 63742), (406, 49455), (435, 46158), (441, 45530), (471, 42630), (490, 40977), (522, 38465), (609, 32970), (630, 31871), (735, 27318), (785, 25578), (870, 23079), (882, 22765), (942, 21315), (1015, 19782), (1099, 18270), (1218, 16485), (1305, 15386), (1413, 14210), (1421, 14130), (1470, 13659), (1570, 12789), (1827, 10990), (2030, 9891), (2198, 9135), (2205, 9106), (2355, 8526), (2610, 7693), (2826, 7105), (2842, 7065), (3045, 6594), (3297, 6090), (3654, 5495), (4263, 4710), (4410, 4553)]