161965880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{4021}}^1$

素因数の和:4104

約数の個数: 64

約数和(自身を含む): 390938400

約数和(自身を除く): 228972520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 53, 76, 95, 106, 152, 190, 212, 265, 380, 424, 530, 760, 1007, 1060, 2014, 2120, 4021, 4028, 5035, 8042, 8056, 10070, 16084, 20105, 20140, 32168, 40210, 40280, 76399, 80420, 152798, 160840, 213113, 305596, 381995, 426226, 611192, 763990, 852452, 1065565, 1527980, 1704904, 2131130, 3055960, 4049147, 4262260, 8098294, 8524520, 16196588, 20245735, 32393176, 40491470, 80982940, 161965880]

約数ペア:

[(1, 161965880), (2, 80982940), (4, 40491470), (5, 32393176), (8, 20245735), (10, 16196588), (19, 8524520), (20, 8098294), (38, 4262260), (40, 4049147), (53, 3055960), (76, 2131130), (95, 1704904), (106, 1527980), (152, 1065565), (190, 852452), (212, 763990), (265, 611192), (380, 426226), (424, 381995), (530, 305596), (760, 213113), (1007, 160840), (1060, 152798), (2014, 80420), (2120, 76399), (4021, 40280), (4028, 40210), (5035, 32168), (8042, 20140), (8056, 20105), (10070, 16084)]