1640371920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{621353}}^1$

素因数の和:621380

約数の個数: 80

約数和(自身を含む): 5547448512

約数和(自身を除く): 3907076592

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 621353, 1242706, 1864059, 2485412, 3106765, 3728118, 4970824, 6213530, 6834883, 7456236, 9320295, 9941648, 12427060, 13669766, 14912472, 18640590, 20504649, 24854120, 27339532, 29824944, 34174415, 37281180, 41009298, 49708240, 54679064, 68348830, 74562360, 82018596, 102523245, 109358128, 136697660, 149124720, 164037192, 205046490, 273395320, 328074384, 410092980, 546790640, 820185960, 1640371920]

約数ペア:

[(1, 1640371920), (2, 820185960), (3, 546790640), (4, 410092980), (5, 328074384), (6, 273395320), (8, 205046490), (10, 164037192), (11, 149124720), (12, 136697660), (15, 109358128), (16, 102523245), (20, 82018596), (22, 74562360), (24, 68348830), (30, 54679064), (33, 49708240), (40, 41009298), (44, 37281180), (48, 34174415), (55, 29824944), (60, 27339532), (66, 24854120), (80, 20504649), (88, 18640590), (110, 14912472), (120, 13669766), (132, 12427060), (165, 9941648), (176, 9320295), (220, 7456236), (240, 6834883), (264, 6213530), (330, 4970824), (440, 3728118), (528, 3106765), (660, 2485412), (880, 1864059), (1320, 1242706), (2640, 621353)]