78644020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6173}}^1$

素因数の和:6209

約数の個数: 72

約数和(自身を含む): 206927784

約数和(自身を除く): 128283764

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2548, 3185, 6173, 6370, 12346, 12740, 24692, 30865, 43211, 61730, 80249, 86422, 123460, 160498, 172844, 216055, 302477, 320996, 401245, 432110, 561743, 604954, 802490, 864220, 1123486, 1209908, 1512385, 1604980, 2246972, 2808715, 3024770, 3932201, 5617430, 6049540, 7864402, 11234860, 15728804, 19661005, 39322010, 78644020]

約数ペア:

[(1, 78644020), (2, 39322010), (4, 19661005), (5, 15728804), (7, 11234860), (10, 7864402), (13, 6049540), (14, 5617430), (20, 3932201), (26, 3024770), (28, 2808715), (35, 2246972), (49, 1604980), (52, 1512385), (65, 1209908), (70, 1123486), (91, 864220), (98, 802490), (130, 604954), (140, 561743), (182, 432110), (196, 401245), (245, 320996), (260, 302477), (364, 216055), (455, 172844), (490, 160498), (637, 123460), (910, 86422), (980, 80249), (1274, 61730), (1820, 43211), (2548, 30865), (3185, 24692), (6173, 12740), (6370, 12346)]