21920680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28843}}^1$

素因数の和:28873

約数の個数: 32

約数和(自身を含む): 51919200

約数和(自身を除く): 29998520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28843, 57686, 115372, 144215, 230744, 288430, 548017, 576860, 1096034, 1153720, 2192068, 2740085, 4384136, 5480170, 10960340, 21920680]

約数ペア:

[(1, 21920680), (2, 10960340), (4, 5480170), (5, 4384136), (8, 2740085), (10, 2192068), (19, 1153720), (20, 1096034), (38, 576860), (40, 548017), (76, 288430), (95, 230744), (152, 144215), (190, 115372), (380, 57686), (760, 28843)]