640964160

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{222557}}^1$

素因数の和:222580

約数の個数: 84

約数和(自身を含む): 2204659548

約数和(自身を除く): 1563695388

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 144, 160, 180, 192, 240, 288, 320, 360, 480, 576, 720, 960, 1440, 2880, 222557, 445114, 667671, 890228, 1112785, 1335342, 1780456, 2003013, 2225570, 2670684, 3338355, 3560912, 4006026, 4451140, 5341368, 6676710, 7121824, 8012052, 8902280, 10015065, 10682736, 13353420, 14243648, 16024104, 17804560, 20030130, 21365472, 26706840, 32048208, 35609120, 40060260, 42730944, 53413680, 64096416, 71218240, 80120520, 106827360, 128192832, 160241040, 213654720, 320482080, 640964160]

約数ペア:

[(1, 640964160), (2, 320482080), (3, 213654720), (4, 160241040), (5, 128192832), (6, 106827360), (8, 80120520), (9, 71218240), (10, 64096416), (12, 53413680), (15, 42730944), (16, 40060260), (18, 35609120), (20, 32048208), (24, 26706840), (30, 21365472), (32, 20030130), (36, 17804560), (40, 16024104), (45, 14243648), (48, 13353420), (60, 10682736), (64, 10015065), (72, 8902280), (80, 8012052), (90, 7121824), (96, 6676710), (120, 5341368), (144, 4451140), (160, 4006026), (180, 3560912), (192, 3338355), (240, 2670684), (288, 2225570), (320, 2003013), (360, 1780456), (480, 1335342), (576, 1112785), (720, 890228), (960, 667671), (1440, 445114), (2880, 222557)]