20577304

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 45849600

約数和(自身を除く): 25272296

約数列:

[1, 2, 4, 8, 11, 19, 22, 31, 38, 44, 62, 76, 88, 124, 152, 209, 248, 341, 397, 418, 589, 682, 794, 836, 1178, 1364, 1588, 1672, 2356, 2728, 3176, 4367, 4712, 6479, 7543, 8734, 12307, 12958, 15086, 17468, 24614, 25916, 30172, 34936, 49228, 51832, 60344, 82973, 98456, 135377, 165946, 233833, 270754, 331892, 467666, 541508, 663784, 935332, 1083016, 1870664, 2572163, 5144326, 10288652, 20577304]

約数ペア:

[(1, 20577304), (2, 10288652), (4, 5144326), (8, 2572163), (11, 1870664), (19, 1083016), (22, 935332), (31, 663784), (38, 541508), (44, 467666), (62, 331892), (76, 270754), (88, 233833), (124, 165946), (152, 135377), (209, 98456), (248, 82973), (341, 60344), (397, 51832), (418, 49228), (589, 34936), (682, 30172), (794, 25916), (836, 24614), (1178, 17468), (1364, 15086), (1588, 12958), (1672, 12307), (2356, 8734), (2728, 7543), (3176, 6479), (4367, 4712)]