21895220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{367}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 48840960

約数和(自身を除く): 26945740

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 157, 190, 314, 367, 380, 628, 734, 785, 1468, 1570, 1835, 2983, 3140, 3670, 5966, 6973, 7340, 11932, 13946, 14915, 27892, 29830, 34865, 57619, 59660, 69730, 115238, 139460, 230476, 288095, 576190, 1094761, 1152380, 2189522, 4379044, 5473805, 10947610, 21895220]

約数ペア:

[(1, 21895220), (2, 10947610), (4, 5473805), (5, 4379044), (10, 2189522), (19, 1152380), (20, 1094761), (38, 576190), (76, 288095), (95, 230476), (157, 139460), (190, 115238), (314, 69730), (367, 59660), (380, 57619), (628, 34865), (734, 29830), (785, 27892), (1468, 14915), (1570, 13946), (1835, 11932), (2983, 7340), (3140, 6973), (3670, 5966)]