38898340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 91181160

約数和(自身を除く): 52282820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 89, 130, 164, 178, 205, 260, 356, 410, 445, 533, 820, 890, 1066, 1157, 1681, 1780, 2132, 2314, 2665, 3362, 3649, 4628, 5330, 5785, 6724, 7298, 8405, 10660, 11570, 14596, 16810, 18245, 21853, 23140, 33620, 36490, 43706, 47437, 72980, 87412, 94874, 109265, 149609, 189748, 218530, 237185, 299218, 437060, 474370, 598436, 748045, 948740, 1496090, 1944917, 2992180, 3889834, 7779668, 9724585, 19449170, 38898340]

約数ペア:

[(1, 38898340), (2, 19449170), (4, 9724585), (5, 7779668), (10, 3889834), (13, 2992180), (20, 1944917), (26, 1496090), (41, 948740), (52, 748045), (65, 598436), (82, 474370), (89, 437060), (130, 299218), (164, 237185), (178, 218530), (205, 189748), (260, 149609), (356, 109265), (410, 94874), (445, 87412), (533, 72980), (820, 47437), (890, 43706), (1066, 36490), (1157, 33620), (1681, 23140), (1780, 21853), (2132, 18245), (2314, 16810), (2665, 14596), (3362, 11570), (3649, 10660), (4628, 8405), (5330, 7298), (5785, 6724)]