19640640

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:560

約数の個数: 112

約数和(自身を含む): 64008000

約数和(自身を除く): 44367360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 41, 48, 60, 64, 80, 82, 96, 120, 123, 160, 164, 192, 205, 240, 246, 320, 328, 410, 480, 492, 499, 615, 656, 820, 960, 984, 998, 1230, 1312, 1497, 1640, 1968, 1996, 2460, 2495, 2624, 2994, 3280, 3936, 3992, 4920, 4990, 5988, 6560, 7485, 7872, 7984, 9840, 9980, 11976, 13120, 14970, 15968, 19680, 19960, 20459, 23952, 29940, 31936, 39360, 39920, 40918, 47904, 59880, 61377, 79840, 81836, 95808, 102295, 119760, 122754, 159680, 163672, 204590, 239520, 245508, 306885, 327344, 409180, 479040, 491016, 613770, 654688, 818360, 982032, 1227540, 1309376, 1636720, 1964064, 2455080, 3273440, 3928128, 4910160, 6546880, 9820320, 19640640]

約数ペア:

[(1, 19640640), (2, 9820320), (3, 6546880), (4, 4910160), (5, 3928128), (6, 3273440), (8, 2455080), (10, 1964064), (12, 1636720), (15, 1309376), (16, 1227540), (20, 982032), (24, 818360), (30, 654688), (32, 613770), (40, 491016), (41, 479040), (48, 409180), (60, 327344), (64, 306885), (80, 245508), (82, 239520), (96, 204590), (120, 163672), (123, 159680), (160, 122754), (164, 119760), (192, 102295), (205, 95808), (240, 81836), (246, 79840), (320, 61377), (328, 59880), (410, 47904), (480, 40918), (492, 39920), (499, 39360), (615, 31936), (656, 29940), (820, 23952), (960, 20459), (984, 19960), (998, 19680), (1230, 15968), (1312, 14970), (1497, 13120), (1640, 11976), (1968, 9980), (1996, 9840), (2460, 7984), (2495, 7872), (2624, 7485), (2994, 6560), (3280, 5988), (3936, 4990), (3992, 4920)]