18981300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:218

約数の個数: 144

約数和(自身を含む): 61440512

約数和(自身を除く): 42459212

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 31, 39, 50, 52, 60, 62, 65, 75, 78, 93, 100, 124, 130, 150, 155, 156, 157, 186, 195, 260, 300, 310, 314, 325, 372, 390, 403, 465, 471, 620, 628, 650, 775, 780, 785, 806, 930, 942, 975, 1209, 1300, 1550, 1570, 1612, 1860, 1884, 1950, 2015, 2041, 2325, 2355, 2418, 3100, 3140, 3900, 3925, 4030, 4082, 4650, 4710, 4836, 4867, 6045, 6123, 7850, 8060, 8164, 9300, 9420, 9734, 10075, 10205, 11775, 12090, 12246, 14601, 15700, 19468, 20150, 20410, 23550, 24180, 24335, 24492, 29202, 30225, 30615, 40300, 40820, 47100, 48670, 51025, 58404, 60450, 61230, 63271, 73005, 97340, 102050, 120900, 121675, 122460, 126542, 146010, 153075, 189813, 204100, 243350, 253084, 292020, 306150, 316355, 365025, 379626, 486700, 612300, 632710, 730050, 759252, 949065, 1265420, 1460100, 1581775, 1898130, 3163550, 3796260, 4745325, 6327100, 9490650, 18981300]

約数ペア:

[(1, 18981300), (2, 9490650), (3, 6327100), (4, 4745325), (5, 3796260), (6, 3163550), (10, 1898130), (12, 1581775), (13, 1460100), (15, 1265420), (20, 949065), (25, 759252), (26, 730050), (30, 632710), (31, 612300), (39, 486700), (50, 379626), (52, 365025), (60, 316355), (62, 306150), (65, 292020), (75, 253084), (78, 243350), (93, 204100), (100, 189813), (124, 153075), (130, 146010), (150, 126542), (155, 122460), (156, 121675), (157, 120900), (186, 102050), (195, 97340), (260, 73005), (300, 63271), (310, 61230), (314, 60450), (325, 58404), (372, 51025), (390, 48670), (403, 47100), (465, 40820), (471, 40300), (620, 30615), (628, 30225), (650, 29202), (775, 24492), (780, 24335), (785, 24180), (806, 23550), (930, 20410), (942, 20150), (975, 19468), (1209, 15700), (1300, 14601), (1550, 12246), (1570, 12090), (1612, 11775), (1860, 10205), (1884, 10075), (1950, 9734), (2015, 9420), (2041, 9300), (2325, 8164), (2355, 8060), (2418, 7850), (3100, 6123), (3140, 6045), (3900, 4867), (3925, 4836), (4030, 4710), (4082, 4650)]