243940240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{167}}^1$

素因数の和:261

約数の個数: 120

約数和(自身を含む): 620585280

約数和(自身を除く): 376645040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 167, 190, 248, 304, 310, 334, 380, 496, 589, 620, 668, 760, 835, 961, 1178, 1240, 1336, 1520, 1670, 1922, 2356, 2480, 2672, 2945, 3173, 3340, 3844, 4712, 4805, 5177, 5890, 6346, 6680, 7688, 9424, 9610, 10354, 11780, 12692, 13360, 15376, 15865, 18259, 19220, 20708, 23560, 25384, 25885, 31730, 36518, 38440, 41416, 47120, 50768, 51770, 63460, 73036, 76880, 82832, 91295, 98363, 103540, 126920, 146072, 160487, 182590, 196726, 207080, 253840, 292144, 320974, 365180, 393452, 414160, 491815, 641948, 730360, 786904, 802435, 983630, 1283896, 1460720, 1573808, 1604870, 1967260, 2567792, 3049253, 3209740, 3934520, 6098506, 6419480, 7869040, 12197012, 12838960, 15246265, 24394024, 30492530, 48788048, 60985060, 121970120, 243940240]

約数ペア:

[(1, 243940240), (2, 121970120), (4, 60985060), (5, 48788048), (8, 30492530), (10, 24394024), (16, 15246265), (19, 12838960), (20, 12197012), (31, 7869040), (38, 6419480), (40, 6098506), (62, 3934520), (76, 3209740), (80, 3049253), (95, 2567792), (124, 1967260), (152, 1604870), (155, 1573808), (167, 1460720), (190, 1283896), (248, 983630), (304, 802435), (310, 786904), (334, 730360), (380, 641948), (496, 491815), (589, 414160), (620, 393452), (668, 365180), (760, 320974), (835, 292144), (961, 253840), (1178, 207080), (1240, 196726), (1336, 182590), (1520, 160487), (1670, 146072), (1922, 126920), (2356, 103540), (2480, 98363), (2672, 91295), (2945, 82832), (3173, 76880), (3340, 73036), (3844, 63460), (4712, 51770), (4805, 50768), (5177, 47120), (5890, 41416), (6346, 38440), (6680, 36518), (7688, 31730), (9424, 25885), (9610, 25384), (10354, 23560), (11780, 20708), (12692, 19220), (13360, 18259), (15376, 15865)]