31269820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 71432928

約数和(自身を除く): 40163108

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 71, 76, 95, 122, 142, 190, 244, 284, 305, 355, 361, 380, 610, 710, 722, 1159, 1220, 1349, 1420, 1444, 1805, 2318, 2698, 3610, 4331, 4636, 5396, 5795, 6745, 7220, 8662, 11590, 13490, 17324, 21655, 22021, 23180, 25631, 26980, 43310, 44042, 51262, 82289, 86620, 88084, 102524, 110105, 128155, 164578, 220210, 256310, 329156, 411445, 440420, 512620, 822890, 1563491, 1645780, 3126982, 6253964, 7817455, 15634910, 31269820]

約数ペア:

[(1, 31269820), (2, 15634910), (4, 7817455), (5, 6253964), (10, 3126982), (19, 1645780), (20, 1563491), (38, 822890), (61, 512620), (71, 440420), (76, 411445), (95, 329156), (122, 256310), (142, 220210), (190, 164578), (244, 128155), (284, 110105), (305, 102524), (355, 88084), (361, 86620), (380, 82289), (610, 51262), (710, 44042), (722, 43310), (1159, 26980), (1220, 25631), (1349, 23180), (1420, 22021), (1444, 21655), (1805, 17324), (2318, 13490), (2698, 11590), (3610, 8662), (4331, 7220), (4636, 6745), (5396, 5795)]