21605016

素因数分解:

$2^3\times 3^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 56678400

約数和(自身を除く): 35073384

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 31, 62, 71, 93, 124, 142, 186, 213, 248, 284, 372, 409, 426, 568, 744, 818, 852, 1227, 1636, 1704, 2201, 2454, 3272, 4402, 4908, 6603, 8804, 9816, 12679, 13206, 17608, 25358, 26412, 29039, 38037, 50716, 52824, 58078, 76074, 87117, 101432, 116156, 152148, 174234, 232312, 304296, 348468, 696936, 900209, 1800418, 2700627, 3600836, 5401254, 7201672, 10802508, 21605016]

約数ペア:

[(1, 21605016), (2, 10802508), (3, 7201672), (4, 5401254), (6, 3600836), (8, 2700627), (12, 1800418), (24, 900209), (31, 696936), (62, 348468), (71, 304296), (93, 232312), (124, 174234), (142, 152148), (186, 116156), (213, 101432), (248, 87117), (284, 76074), (372, 58078), (409, 52824), (426, 50716), (568, 38037), (744, 29039), (818, 26412), (852, 25358), (1227, 17608), (1636, 13206), (1704, 12679), (2201, 9816), (2454, 8804), (3272, 6603), (4402, 4908)]