1388892680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{1697}}^1$

素因数の和:1831

約数の個数: 128

約数和(自身を含む): 3716582400

約数和(自身を除く): 2327689720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 79, 140, 148, 158, 185, 259, 280, 296, 316, 370, 395, 518, 553, 632, 740, 790, 1036, 1106, 1295, 1480, 1580, 1697, 2072, 2212, 2590, 2765, 2923, 3160, 3394, 4424, 5180, 5530, 5846, 6788, 8485, 10360, 11060, 11692, 11879, 13576, 14615, 16970, 20461, 22120, 23384, 23758, 29230, 33940, 40922, 47516, 58460, 59395, 62789, 67880, 81844, 95032, 102305, 116920, 118790, 125578, 134063, 163688, 204610, 237580, 251156, 268126, 313945, 409220, 439523, 475160, 502312, 536252, 627890, 670315, 818440, 879046, 938441, 1072504, 1255780, 1340630, 1758092, 1876882, 2197615, 2511560, 2681260, 3516184, 3753764, 4395230, 4692205, 4960331, 5362520, 7507528, 8790460, 9384410, 9920662, 17580920, 18768820, 19841324, 24801655, 34722317, 37537640, 39682648, 49603310, 69444634, 99206620, 138889268, 173611585, 198413240, 277778536, 347223170, 694446340, 1388892680]

約数ペア:

[(1, 1388892680), (2, 694446340), (4, 347223170), (5, 277778536), (7, 198413240), (8, 173611585), (10, 138889268), (14, 99206620), (20, 69444634), (28, 49603310), (35, 39682648), (37, 37537640), (40, 34722317), (56, 24801655), (70, 19841324), (74, 18768820), (79, 17580920), (140, 9920662), (148, 9384410), (158, 8790460), (185, 7507528), (259, 5362520), (280, 4960331), (296, 4692205), (316, 4395230), (370, 3753764), (395, 3516184), (518, 2681260), (553, 2511560), (632, 2197615), (740, 1876882), (790, 1758092), (1036, 1340630), (1106, 1255780), (1295, 1072504), (1480, 938441), (1580, 879046), (1697, 818440), (2072, 670315), (2212, 627890), (2590, 536252), (2765, 502312), (2923, 475160), (3160, 439523), (3394, 409220), (4424, 313945), (5180, 268126), (5530, 251156), (5846, 237580), (6788, 204610), (8485, 163688), (10360, 134063), (11060, 125578), (11692, 118790), (11879, 116920), (13576, 102305), (14615, 95032), (16970, 81844), (20461, 67880), (22120, 62789), (23384, 59395), (23758, 58460), (29230, 47516), (33940, 40922)]