28601980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{223}}^1$

素因数の和:307

約数の個数: 72

約数和(自身を含む): 67568256

約数和(自身を除く): 38966276

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 121, 212, 220, 223, 242, 265, 446, 484, 530, 583, 605, 892, 1060, 1115, 1166, 1210, 2230, 2332, 2420, 2453, 2915, 4460, 4906, 5830, 6413, 9812, 11660, 11819, 12265, 12826, 23638, 24530, 25652, 26983, 32065, 47276, 49060, 53966, 59095, 64130, 107932, 118190, 128260, 130009, 134915, 236380, 260018, 269830, 520036, 539660, 650045, 1300090, 1430099, 2600180, 2860198, 5720396, 7150495, 14300990, 28601980]

約数ペア:

[(1, 28601980), (2, 14300990), (4, 7150495), (5, 5720396), (10, 2860198), (11, 2600180), (20, 1430099), (22, 1300090), (44, 650045), (53, 539660), (55, 520036), (106, 269830), (110, 260018), (121, 236380), (212, 134915), (220, 130009), (223, 128260), (242, 118190), (265, 107932), (446, 64130), (484, 59095), (530, 53966), (583, 49060), (605, 47276), (892, 32065), (1060, 26983), (1115, 25652), (1166, 24530), (1210, 23638), (2230, 12826), (2332, 12265), (2420, 11819), (2453, 11660), (2915, 9812), (4460, 6413), (4906, 5830)]