647542575

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{797}}^1$

素因数の和:993

約数の個数: 72

約数和(自身を含む): 1219484448

約数和(自身を除く): 571941873

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 157, 207, 225, 345, 471, 575, 785, 797, 1035, 1413, 1725, 2355, 2391, 3611, 3925, 3985, 5175, 7065, 7173, 10833, 11775, 11955, 18055, 18331, 19925, 32499, 35325, 35865, 54165, 54993, 59775, 90275, 91655, 125129, 162495, 164979, 179325, 270825, 274965, 375387, 458275, 625645, 812475, 824895, 1126161, 1374825, 1876935, 2877967, 3128225, 4124475, 5630805, 8633901, 9384675, 14389835, 25901703, 28154025, 43169505, 71949175, 129508515, 215847525, 647542575]

約数ペア:

[(1, 647542575), (3, 215847525), (5, 129508515), (9, 71949175), (15, 43169505), (23, 28154025), (25, 25901703), (45, 14389835), (69, 9384675), (75, 8633901), (115, 5630805), (157, 4124475), (207, 3128225), (225, 2877967), (345, 1876935), (471, 1374825), (575, 1126161), (785, 824895), (797, 812475), (1035, 625645), (1413, 458275), (1725, 375387), (2355, 274965), (2391, 270825), (3611, 179325), (3925, 164979), (3985, 162495), (5175, 125129), (7065, 91655), (7173, 90275), (10833, 59775), (11775, 54993), (11955, 54165), (18055, 35865), (18331, 35325), (19925, 32499)]