20129209940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{25229}}^1$

素因数の和:25425

約数の個数: 96

約数和(自身を含む): 49846406400

約数和(自身を除く): 29717196460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 139, 140, 164, 205, 278, 287, 410, 556, 574, 695, 820, 973, 1148, 1390, 1435, 1946, 2780, 2870, 3892, 4865, 5699, 5740, 9730, 11398, 19460, 22796, 25229, 28495, 39893, 50458, 56990, 79786, 100916, 113980, 126145, 159572, 176603, 199465, 252290, 353206, 398930, 504580, 706412, 797860, 883015, 1034389, 1766030, 2068778, 3506831, 3532060, 4137556, 5171945, 7013662, 7240723, 10343890, 14027324, 14481446, 17534155, 20687780, 24547817, 28962892, 35068310, 36203615, 49095634, 70136620, 72407230, 98191268, 122739085, 143780071, 144814460, 245478170, 287560142, 490956340, 575120284, 718900355, 1006460497, 1437800710, 2012920994, 2875601420, 4025841988, 5032302485, 10064604970, 20129209940]

約数ペア:

[(1, 20129209940), (2, 10064604970), (4, 5032302485), (5, 4025841988), (7, 2875601420), (10, 2012920994), (14, 1437800710), (20, 1006460497), (28, 718900355), (35, 575120284), (41, 490956340), (70, 287560142), (82, 245478170), (139, 144814460), (140, 143780071), (164, 122739085), (205, 98191268), (278, 72407230), (287, 70136620), (410, 49095634), (556, 36203615), (574, 35068310), (695, 28962892), (820, 24547817), (973, 20687780), (1148, 17534155), (1390, 14481446), (1435, 14027324), (1946, 10343890), (2780, 7240723), (2870, 7013662), (3892, 5171945), (4865, 4137556), (5699, 3532060), (5740, 3506831), (9730, 2068778), (11398, 1766030), (19460, 1034389), (22796, 883015), (25229, 797860), (28495, 706412), (39893, 504580), (50458, 398930), (56990, 353206), (79786, 252290), (100916, 199465), (113980, 176603), (126145, 159572)]