31620940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 77757120

約数和(自身を除く): 46136180

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 37, 38, 52, 65, 74, 76, 95, 130, 148, 173, 185, 190, 247, 260, 346, 370, 380, 481, 494, 692, 703, 740, 865, 962, 988, 1235, 1406, 1730, 1924, 2249, 2405, 2470, 2812, 3287, 3460, 3515, 4498, 4810, 4940, 6401, 6574, 7030, 8996, 9139, 9620, 11245, 12802, 13148, 14060, 16435, 18278, 22490, 25604, 32005, 32870, 36556, 42731, 44980, 45695, 64010, 65740, 83213, 85462, 91390, 121619, 128020, 166426, 170924, 182780, 213655, 243238, 332852, 416065, 427310, 486476, 608095, 832130, 854620, 1216190, 1581047, 1664260, 2432380, 3162094, 6324188, 7905235, 15810470, 31620940]

約数ペア:

[(1, 31620940), (2, 15810470), (4, 7905235), (5, 6324188), (10, 3162094), (13, 2432380), (19, 1664260), (20, 1581047), (26, 1216190), (37, 854620), (38, 832130), (52, 608095), (65, 486476), (74, 427310), (76, 416065), (95, 332852), (130, 243238), (148, 213655), (173, 182780), (185, 170924), (190, 166426), (247, 128020), (260, 121619), (346, 91390), (370, 85462), (380, 83213), (481, 65740), (494, 64010), (692, 45695), (703, 44980), (740, 42731), (865, 36556), (962, 32870), (988, 32005), (1235, 25604), (1406, 22490), (1730, 18278), (1924, 16435), (2249, 14060), (2405, 13148), (2470, 12802), (2812, 11245), (3287, 9620), (3460, 9139), (3515, 8996), (4498, 7030), (4810, 6574), (4940, 6401)]