16913420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{947}}^1$

素因数の和:1022

約数の個数: 48

約数和(自身を含む): 38223360

約数和(自身を除く): 21309940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 470, 893, 940, 947, 1786, 1894, 3572, 3788, 4465, 4735, 8930, 9470, 17860, 17993, 18940, 35986, 44509, 71972, 89018, 89965, 178036, 179930, 222545, 359860, 445090, 845671, 890180, 1691342, 3382684, 4228355, 8456710, 16913420]

約数ペア:

[(1, 16913420), (2, 8456710), (4, 4228355), (5, 3382684), (10, 1691342), (19, 890180), (20, 845671), (38, 445090), (47, 359860), (76, 222545), (94, 179930), (95, 178036), (188, 89965), (190, 89018), (235, 71972), (380, 44509), (470, 35986), (893, 18940), (940, 17993), (947, 17860), (1786, 9470), (1894, 8930), (3572, 4735), (3788, 4465)]