408026560

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{20903}}^1$

素因数の和:20981

約数の個数: 56

約数和(自身を含む): 987588576

約数和(自身を除く): 579562016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 244, 305, 320, 488, 610, 976, 1220, 1952, 2440, 3904, 4880, 9760, 19520, 20903, 41806, 83612, 104515, 167224, 209030, 334448, 418060, 668896, 836120, 1275083, 1337792, 1672240, 2550166, 3344480, 5100332, 6375415, 6688960, 10200664, 12750830, 20401328, 25501660, 40802656, 51003320, 81605312, 102006640, 204013280, 408026560]

約数ペア:

[(1, 408026560), (2, 204013280), (4, 102006640), (5, 81605312), (8, 51003320), (10, 40802656), (16, 25501660), (20, 20401328), (32, 12750830), (40, 10200664), (61, 6688960), (64, 6375415), (80, 5100332), (122, 3344480), (160, 2550166), (244, 1672240), (305, 1337792), (320, 1275083), (488, 836120), (610, 668896), (976, 418060), (1220, 334448), (1952, 209030), (2440, 167224), (3904, 104515), (4880, 83612), (9760, 41806), (19520, 20903)]