18840704

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 40473600

約数和(自身を除く): 21632896

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 61, 64, 76, 122, 127, 128, 152, 244, 254, 304, 488, 508, 608, 976, 1016, 1159, 1216, 1952, 2032, 2318, 2413, 2432, 3904, 4064, 4636, 4826, 7747, 7808, 8128, 9272, 9652, 15494, 16256, 18544, 19304, 30988, 37088, 38608, 61976, 74176, 77216, 123952, 147193, 148352, 154432, 247904, 294386, 308864, 495808, 588772, 991616, 1177544, 2355088, 4710176, 9420352, 18840704]

約数ペア:

[(1, 18840704), (2, 9420352), (4, 4710176), (8, 2355088), (16, 1177544), (19, 991616), (32, 588772), (38, 495808), (61, 308864), (64, 294386), (76, 247904), (122, 154432), (127, 148352), (128, 147193), (152, 123952), (244, 77216), (254, 74176), (304, 61976), (488, 38608), (508, 37088), (608, 30988), (976, 19304), (1016, 18544), (1159, 16256), (1216, 15494), (1952, 9652), (2032, 9272), (2318, 8128), (2413, 7808), (2432, 7747), (3904, 4826), (4064, 4636)]