388678480

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{1259}}^1$

素因数の和:1516

約数の個数: 80

約数和(自身を含む): 961813440

約数和(自身を除く): 573134960

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 227, 272, 340, 454, 680, 908, 1135, 1259, 1360, 1816, 2270, 2518, 3632, 3859, 4540, 5036, 6295, 7718, 9080, 10072, 12590, 15436, 18160, 19295, 20144, 21403, 25180, 30872, 38590, 42806, 50360, 61744, 77180, 85612, 100720, 107015, 154360, 171224, 214030, 285793, 308720, 342448, 428060, 571586, 856120, 1143172, 1428965, 1712240, 2286344, 2857930, 4572688, 4858481, 5715860, 9716962, 11431720, 19433924, 22863440, 24292405, 38867848, 48584810, 77735696, 97169620, 194339240, 388678480]

約数ペア:

[(1, 388678480), (2, 194339240), (4, 97169620), (5, 77735696), (8, 48584810), (10, 38867848), (16, 24292405), (17, 22863440), (20, 19433924), (34, 11431720), (40, 9716962), (68, 5715860), (80, 4858481), (85, 4572688), (136, 2857930), (170, 2286344), (227, 1712240), (272, 1428965), (340, 1143172), (454, 856120), (680, 571586), (908, 428060), (1135, 342448), (1259, 308720), (1360, 285793), (1816, 214030), (2270, 171224), (2518, 154360), (3632, 107015), (3859, 100720), (4540, 85612), (5036, 77180), (6295, 61744), (7718, 50360), (9080, 42806), (10072, 38590), (12590, 30872), (15436, 25180), (18160, 21403), (19295, 20144)]