81987200

素因数分解:

$2^7\times 5^2\times {\mathrm{25621}}^1$

素因数の和:25645

約数の個数: 48

約数和(自身を含む): 202541910

約数和(自身を除く): 120554710

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 25621, 51242, 102484, 128105, 204968, 256210, 409936, 512420, 640525, 819872, 1024840, 1281050, 1639744, 2049680, 2562100, 3279488, 4099360, 5124200, 8198720, 10248400, 16397440, 20496800, 40993600, 81987200]

約数ペア:

[(1, 81987200), (2, 40993600), (4, 20496800), (5, 16397440), (8, 10248400), (10, 8198720), (16, 5124200), (20, 4099360), (25, 3279488), (32, 2562100), (40, 2049680), (50, 1639744), (64, 1281050), (80, 1024840), (100, 819872), (128, 640525), (160, 512420), (200, 409936), (320, 256210), (400, 204968), (640, 128105), (800, 102484), (1600, 51242), (3200, 25621)]