644911340

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{461}}^1\times {\mathrm{619}}^1$

素因数の和:1202

約数の個数: 48

約数和(自身を含む): 1371474720

約数和(自身を除く): 726563380

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 461, 565, 619, 922, 1130, 1238, 1844, 2260, 2305, 2476, 3095, 4610, 6190, 9220, 12380, 52093, 69947, 104186, 139894, 208372, 260465, 279788, 285359, 349735, 520930, 570718, 699470, 1041860, 1141436, 1398940, 1426795, 2853590, 5707180, 32245567, 64491134, 128982268, 161227835, 322455670, 644911340]

約数ペア:

[(1, 644911340), (2, 322455670), (4, 161227835), (5, 128982268), (10, 64491134), (20, 32245567), (113, 5707180), (226, 2853590), (452, 1426795), (461, 1398940), (565, 1141436), (619, 1041860), (922, 699470), (1130, 570718), (1238, 520930), (1844, 349735), (2260, 285359), (2305, 279788), (2476, 260465), (3095, 208372), (4610, 139894), (6190, 104186), (9220, 69947), (12380, 52093)]