20907516

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:120

約数の個数: 108

約数和(自身を含む): 60223464

約数和(自身を除く): 39315948

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 31, 37, 42, 49, 62, 74, 84, 93, 98, 111, 124, 147, 148, 186, 196, 217, 222, 259, 294, 372, 434, 444, 518, 588, 651, 777, 868, 961, 1036, 1147, 1302, 1519, 1554, 1813, 1922, 2294, 2604, 2883, 3038, 3108, 3441, 3626, 3844, 4557, 4588, 5439, 5766, 6076, 6727, 6882, 7252, 8029, 9114, 10878, 11532, 13454, 13764, 16058, 18228, 20181, 21756, 24087, 26908, 32116, 35557, 40362, 47089, 48174, 56203, 71114, 80724, 94178, 96348, 106671, 112406, 141267, 142228, 168609, 188356, 213342, 224812, 248899, 282534, 337218, 426684, 497798, 565068, 674436, 746697, 995596, 1493394, 1742293, 2986788, 3484586, 5226879, 6969172, 10453758, 20907516]

約数ペア:

[(1, 20907516), (2, 10453758), (3, 6969172), (4, 5226879), (6, 3484586), (7, 2986788), (12, 1742293), (14, 1493394), (21, 995596), (28, 746697), (31, 674436), (37, 565068), (42, 497798), (49, 426684), (62, 337218), (74, 282534), (84, 248899), (93, 224812), (98, 213342), (111, 188356), (124, 168609), (147, 142228), (148, 141267), (186, 112406), (196, 106671), (217, 96348), (222, 94178), (259, 80724), (294, 71114), (372, 56203), (434, 48174), (444, 47089), (518, 40362), (588, 35557), (651, 32116), (777, 26908), (868, 24087), (961, 21756), (1036, 20181), (1147, 18228), (1302, 16058), (1519, 13764), (1554, 13454), (1813, 11532), (1922, 10878), (2294, 9114), (2604, 8029), (2883, 7252), (3038, 6882), (3108, 6727), (3441, 6076), (3626, 5766), (3844, 5439), (4557, 4588)]