80210020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{619}}^1$

素因数の和:689

約数の個数: 96

約数和(自身を含む): 199987200

約数和(自身を除く): 119777180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 31, 38, 44, 55, 62, 76, 95, 110, 124, 155, 190, 209, 220, 310, 341, 380, 418, 589, 619, 620, 682, 836, 1045, 1178, 1238, 1364, 1705, 2090, 2356, 2476, 2945, 3095, 3410, 4180, 5890, 6190, 6479, 6809, 6820, 11761, 11780, 12380, 12958, 13618, 19189, 23522, 25916, 27236, 32395, 34045, 38378, 47044, 58805, 64790, 68090, 76756, 95945, 117610, 129371, 129580, 136180, 191890, 211079, 235220, 258742, 364591, 383780, 422158, 517484, 646855, 729182, 844316, 1055395, 1293710, 1458364, 1822955, 2110790, 2587420, 3645910, 4010501, 4221580, 7291820, 8021002, 16042004, 20052505, 40105010, 80210020]

約数ペア:

[(1, 80210020), (2, 40105010), (4, 20052505), (5, 16042004), (10, 8021002), (11, 7291820), (19, 4221580), (20, 4010501), (22, 3645910), (31, 2587420), (38, 2110790), (44, 1822955), (55, 1458364), (62, 1293710), (76, 1055395), (95, 844316), (110, 729182), (124, 646855), (155, 517484), (190, 422158), (209, 383780), (220, 364591), (310, 258742), (341, 235220), (380, 211079), (418, 191890), (589, 136180), (619, 129580), (620, 129371), (682, 117610), (836, 95945), (1045, 76756), (1178, 68090), (1238, 64790), (1364, 58805), (1705, 47044), (2090, 38378), (2356, 34045), (2476, 32395), (2945, 27236), (3095, 25916), (3410, 23522), (4180, 19189), (5890, 13618), (6190, 12958), (6479, 12380), (6809, 11780), (6820, 11761)]