221447785

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{419}}^1$

素因数の和:657

約数の個数: 32

約数和(自身を含む): 294658560

約数和(自身を除く): 73210775

約数列:

[1, 5, 13, 47, 65, 173, 235, 419, 611, 865, 2095, 2249, 3055, 5447, 8131, 11245, 19693, 27235, 40655, 72487, 98465, 105703, 256009, 362435, 528515, 942331, 1280045, 3406889, 4711655, 17034445, 44289557, 221447785]

約数ペア:

[(1, 221447785), (5, 44289557), (13, 17034445), (47, 4711655), (65, 3406889), (173, 1280045), (235, 942331), (419, 528515), (611, 362435), (865, 256009), (2095, 105703), (2249, 98465), (3055, 72487), (5447, 40655), (8131, 27235), (11245, 19693)]