21378630

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:262

約数の個数: 128

約数和(自身を含む): 65028096

約数和(自身を除く): 43649466

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 41, 42, 65, 70, 78, 82, 91, 105, 123, 130, 182, 191, 195, 205, 210, 246, 273, 287, 382, 390, 410, 455, 533, 546, 573, 574, 615, 861, 910, 955, 1066, 1146, 1230, 1337, 1365, 1435, 1599, 1722, 1910, 2483, 2665, 2674, 2730, 2865, 2870, 3198, 3731, 4011, 4305, 4966, 5330, 5730, 6685, 7449, 7462, 7831, 7995, 8022, 8610, 11193, 12415, 13370, 14898, 15662, 15990, 17381, 18655, 20055, 22386, 23493, 24830, 34762, 37245, 37310, 39155, 40110, 46986, 52143, 54817, 55965, 74490, 78310, 86905, 101803, 104286, 109634, 111930, 117465, 164451, 173810, 203606, 234930, 260715, 274085, 305409, 328902, 509015, 521430, 548170, 610818, 712621, 822255, 1018030, 1425242, 1527045, 1644510, 2137863, 3054090, 3563105, 4275726, 7126210, 10689315, 21378630]

約数ペア:

[(1, 21378630), (2, 10689315), (3, 7126210), (5, 4275726), (6, 3563105), (7, 3054090), (10, 2137863), (13, 1644510), (14, 1527045), (15, 1425242), (21, 1018030), (26, 822255), (30, 712621), (35, 610818), (39, 548170), (41, 521430), (42, 509015), (65, 328902), (70, 305409), (78, 274085), (82, 260715), (91, 234930), (105, 203606), (123, 173810), (130, 164451), (182, 117465), (191, 111930), (195, 109634), (205, 104286), (210, 101803), (246, 86905), (273, 78310), (287, 74490), (382, 55965), (390, 54817), (410, 52143), (455, 46986), (533, 40110), (546, 39155), (573, 37310), (574, 37245), (615, 34762), (861, 24830), (910, 23493), (955, 22386), (1066, 20055), (1146, 18655), (1230, 17381), (1337, 15990), (1365, 15662), (1435, 14898), (1599, 13370), (1722, 12415), (1910, 11193), (2483, 8610), (2665, 8022), (2674, 7995), (2730, 7831), (2865, 7462), (2870, 7449), (3198, 6685), (3731, 5730), (4011, 5330), (4305, 4966)]