439780720

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1\times {\mathrm{397}}^1$

素因数の和:698

約数の個数: 80

約数和(自身を含む): 1046459808

約数和(自身を除く): 606679088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 227, 244, 305, 397, 454, 488, 610, 794, 908, 976, 1135, 1220, 1588, 1816, 1985, 2270, 2440, 3176, 3632, 3970, 4540, 4880, 6352, 7940, 9080, 13847, 15880, 18160, 24217, 27694, 31760, 48434, 55388, 69235, 90119, 96868, 110776, 121085, 138470, 180238, 193736, 221552, 242170, 276940, 360476, 387472, 450595, 484340, 553880, 720952, 901190, 968680, 1107760, 1441904, 1802380, 1937360, 3604760, 5497259, 7209520, 10994518, 21989036, 27486295, 43978072, 54972590, 87956144, 109945180, 219890360, 439780720]

約数ペア:

[(1, 439780720), (2, 219890360), (4, 109945180), (5, 87956144), (8, 54972590), (10, 43978072), (16, 27486295), (20, 21989036), (40, 10994518), (61, 7209520), (80, 5497259), (122, 3604760), (227, 1937360), (244, 1802380), (305, 1441904), (397, 1107760), (454, 968680), (488, 901190), (610, 720952), (794, 553880), (908, 484340), (976, 450595), (1135, 387472), (1220, 360476), (1588, 276940), (1816, 242170), (1985, 221552), (2270, 193736), (2440, 180238), (3176, 138470), (3632, 121085), (3970, 110776), (4540, 96868), (4880, 90119), (6352, 69235), (7940, 55388), (9080, 48434), (13847, 31760), (15880, 27694), (18160, 24217)]