20032400

素因数分解:

$2^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{821}}^1$

素因数の和:900

約数の個数: 60

約数和(自身を含む): 48976404

約数和(自身を除く): 28944004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 200, 244, 305, 400, 488, 610, 821, 976, 1220, 1525, 1642, 2440, 3050, 3284, 4105, 4880, 6100, 6568, 8210, 12200, 13136, 16420, 20525, 24400, 32840, 41050, 50081, 65680, 82100, 100162, 164200, 200324, 250405, 328400, 400648, 500810, 801296, 1001620, 1252025, 2003240, 2504050, 4006480, 5008100, 10016200, 20032400]

約数ペア:

[(1, 20032400), (2, 10016200), (4, 5008100), (5, 4006480), (8, 2504050), (10, 2003240), (16, 1252025), (20, 1001620), (25, 801296), (40, 500810), (50, 400648), (61, 328400), (80, 250405), (100, 200324), (122, 164200), (200, 100162), (244, 82100), (305, 65680), (400, 50081), (488, 41050), (610, 32840), (821, 24400), (976, 20525), (1220, 16420), (1525, 13136), (1642, 12200), (2440, 8210), (3050, 6568), (3284, 6100), (4105, 4880)]