81444440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{853}}^1$

素因数の和:913

約数の個数: 128

約数和(自身を含む): 236113920

約数和(自身を除く): 154669480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 31, 35, 40, 44, 55, 56, 62, 70, 77, 88, 110, 124, 140, 154, 155, 217, 220, 248, 280, 308, 310, 341, 385, 434, 440, 616, 620, 682, 770, 853, 868, 1085, 1240, 1364, 1540, 1705, 1706, 1736, 2170, 2387, 2728, 3080, 3410, 3412, 4265, 4340, 4774, 5971, 6820, 6824, 8530, 8680, 9383, 9548, 11935, 11942, 13640, 17060, 18766, 19096, 23870, 23884, 26443, 29855, 34120, 37532, 46915, 47740, 47768, 52886, 59710, 65681, 75064, 93830, 95480, 105772, 119420, 131362, 132215, 185101, 187660, 211544, 238840, 262724, 264430, 290873, 328405, 370202, 375320, 525448, 528860, 581746, 656810, 740404, 925505, 1057720, 1163492, 1313620, 1454365, 1480808, 1851010, 2036111, 2326984, 2627240, 2908730, 3702020, 4072222, 5817460, 7404040, 8144444, 10180555, 11634920, 16288888, 20361110, 40722220, 81444440]

約数ペア:

[(1, 81444440), (2, 40722220), (4, 20361110), (5, 16288888), (7, 11634920), (8, 10180555), (10, 8144444), (11, 7404040), (14, 5817460), (20, 4072222), (22, 3702020), (28, 2908730), (31, 2627240), (35, 2326984), (40, 2036111), (44, 1851010), (55, 1480808), (56, 1454365), (62, 1313620), (70, 1163492), (77, 1057720), (88, 925505), (110, 740404), (124, 656810), (140, 581746), (154, 528860), (155, 525448), (217, 375320), (220, 370202), (248, 328405), (280, 290873), (308, 264430), (310, 262724), (341, 238840), (385, 211544), (434, 187660), (440, 185101), (616, 132215), (620, 131362), (682, 119420), (770, 105772), (853, 95480), (868, 93830), (1085, 75064), (1240, 65681), (1364, 59710), (1540, 52886), (1705, 47768), (1706, 47740), (1736, 46915), (2170, 37532), (2387, 34120), (2728, 29855), (3080, 26443), (3410, 23884), (3412, 23870), (4265, 19096), (4340, 18766), (4774, 17060), (5971, 13640), (6820, 11942), (6824, 11935), (8530, 9548), (8680, 9383)]