90787120

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:454

約数の個数: 80

約数和(自身を含む): 219360960

約数和(自身を除く): 128573840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 89, 164, 178, 205, 311, 328, 356, 410, 445, 622, 656, 712, 820, 890, 1244, 1424, 1555, 1640, 1780, 2488, 3110, 3280, 3560, 3649, 4976, 6220, 7120, 7298, 12440, 12751, 14596, 18245, 24880, 25502, 27679, 29192, 36490, 51004, 55358, 58384, 63755, 72980, 102008, 110716, 127510, 138395, 145960, 204016, 221432, 255020, 276790, 291920, 442864, 510040, 553580, 1020080, 1107160, 1134839, 2214320, 2269678, 4539356, 5674195, 9078712, 11348390, 18157424, 22696780, 45393560, 90787120]

約数ペア:

[(1, 90787120), (2, 45393560), (4, 22696780), (5, 18157424), (8, 11348390), (10, 9078712), (16, 5674195), (20, 4539356), (40, 2269678), (41, 2214320), (80, 1134839), (82, 1107160), (89, 1020080), (164, 553580), (178, 510040), (205, 442864), (311, 291920), (328, 276790), (356, 255020), (410, 221432), (445, 204016), (622, 145960), (656, 138395), (712, 127510), (820, 110716), (890, 102008), (1244, 72980), (1424, 63755), (1555, 58384), (1640, 55358), (1780, 51004), (2488, 36490), (3110, 29192), (3280, 27679), (3560, 25502), (3649, 24880), (4976, 18245), (6220, 14596), (7120, 12751), (7298, 12440)]