78139780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{3371}}^1$

素因数の和:3460

約数の個数: 48

約数和(自身を含む): 175613760

約数和(自身を除く): 97473980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 610, 1159, 1220, 2318, 3371, 4636, 5795, 6742, 11590, 13484, 16855, 23180, 33710, 64049, 67420, 128098, 205631, 256196, 320245, 411262, 640490, 822524, 1028155, 1280980, 2056310, 3906989, 4112620, 7813978, 15627956, 19534945, 39069890, 78139780]

約数ペア:

[(1, 78139780), (2, 39069890), (4, 19534945), (5, 15627956), (10, 7813978), (19, 4112620), (20, 3906989), (38, 2056310), (61, 1280980), (76, 1028155), (95, 822524), (122, 640490), (190, 411262), (244, 320245), (305, 256196), (380, 205631), (610, 128098), (1159, 67420), (1220, 64049), (2318, 33710), (3371, 23180), (4636, 16855), (5795, 13484), (6742, 11590)]