420811240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{553699}}^1$

素因数の和:553729

約数の個数: 32

約数和(自身を含む): 996660000

約数和(自身を除く): 575848760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 553699, 1107398, 2214796, 2768495, 4429592, 5536990, 10520281, 11073980, 21040562, 22147960, 42081124, 52601405, 84162248, 105202810, 210405620, 420811240]

約数ペア:

[(1, 420811240), (2, 210405620), (4, 105202810), (5, 84162248), (8, 52601405), (10, 42081124), (19, 22147960), (20, 21040562), (38, 11073980), (40, 10520281), (76, 5536990), (95, 4429592), (152, 2768495), (190, 2214796), (380, 1107398), (760, 553699)]