168405020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{38803}}^1$

素因数の和:38850

約数の個数: 48

約数和(自身を含む): 417220608

約数和(自身を除く): 248815588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 38803, 77606, 155212, 194015, 271621, 388030, 543242, 776060, 1086484, 1202893, 1358105, 2405786, 2716210, 4811572, 5432420, 6014465, 8420251, 12028930, 16840502, 24057860, 33681004, 42101255, 84202510, 168405020]

約数ペア:

[(1, 168405020), (2, 84202510), (4, 42101255), (5, 33681004), (7, 24057860), (10, 16840502), (14, 12028930), (20, 8420251), (28, 6014465), (31, 5432420), (35, 4811572), (62, 2716210), (70, 2405786), (124, 1358105), (140, 1202893), (155, 1086484), (217, 776060), (310, 543242), (434, 388030), (620, 271621), (868, 194015), (1085, 155212), (2170, 77606), (4340, 38803)]