16643240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 40176000

約数和(自身を除く): 23532760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 359, 380, 488, 610, 718, 760, 1159, 1220, 1436, 1795, 2318, 2440, 2872, 3590, 4636, 5795, 6821, 7180, 9272, 11590, 13642, 14360, 21899, 23180, 27284, 34105, 43798, 46360, 54568, 68210, 87596, 109495, 136420, 175192, 218990, 272840, 416081, 437980, 832162, 875960, 1664324, 2080405, 3328648, 4160810, 8321620, 16643240]

約数ペア:

[(1, 16643240), (2, 8321620), (4, 4160810), (5, 3328648), (8, 2080405), (10, 1664324), (19, 875960), (20, 832162), (38, 437980), (40, 416081), (61, 272840), (76, 218990), (95, 175192), (122, 136420), (152, 109495), (190, 87596), (244, 68210), (305, 54568), (359, 46360), (380, 43798), (488, 34105), (610, 27284), (718, 23180), (760, 21899), (1159, 14360), (1220, 13642), (1436, 11590), (1795, 9272), (2318, 7180), (2440, 6821), (2872, 5795), (3590, 4636)]