1780380

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{157}}^1$

素因数の和:185

約数の個数: 120

約数和(自身を含む): 6423648

約数和(自身を除く): 4643268

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 157, 162, 180, 189, 210, 252, 270, 314, 315, 324, 378, 405, 420, 471, 540, 567, 628, 630, 756, 785, 810, 942, 945, 1099, 1134, 1260, 1413, 1570, 1620, 1884, 1890, 2198, 2268, 2355, 2826, 2835, 3140, 3297, 3780, 4239, 4396, 4710, 5495, 5652, 5670, 6594, 7065, 8478, 9420, 9891, 10990, 11340, 12717, 13188, 14130, 16485, 16956, 19782, 21195, 21980, 25434, 28260, 29673, 32970, 39564, 42390, 49455, 50868, 59346, 63585, 65940, 84780, 89019, 98910, 118692, 127170, 148365, 178038, 197820, 254340, 296730, 356076, 445095, 593460, 890190, 1780380]

約数ペア:

[(1, 1780380), (2, 890190), (3, 593460), (4, 445095), (5, 356076), (6, 296730), (7, 254340), (9, 197820), (10, 178038), (12, 148365), (14, 127170), (15, 118692), (18, 98910), (20, 89019), (21, 84780), (27, 65940), (28, 63585), (30, 59346), (35, 50868), (36, 49455), (42, 42390), (45, 39564), (54, 32970), (60, 29673), (63, 28260), (70, 25434), (81, 21980), (84, 21195), (90, 19782), (105, 16956), (108, 16485), (126, 14130), (135, 13188), (140, 12717), (157, 11340), (162, 10990), (180, 9891), (189, 9420), (210, 8478), (252, 7065), (270, 6594), (314, 5670), (315, 5652), (324, 5495), (378, 4710), (405, 4396), (420, 4239), (471, 3780), (540, 3297), (567, 3140), (628, 2835), (630, 2826), (756, 2355), (785, 2268), (810, 2198), (942, 1890), (945, 1884), (1099, 1620), (1134, 1570), (1260, 1413)]